Musk led the company's Series A funding round in 2004, contributing $6.5 million and joining Tesla's board as chairman. 

In 2006, Musk published a blog post entitled "The Secret Tesla Motors Master Plan (just between you and me)" in which he laid out Tesla's long-term mission: to help transition the world away from fossil fuels and toward clean energy. 

"Some readers may not be aware of the fact that our long term plan is to build a wide range of models, including affordably priced family cars. This is because the overarching purpose of Tesla Motors (and the reason I am funding the company) is to help expedite the move from a mine-and-burn hydrocarbon economy towards a solar electric economy, which I believe to be the primary, but not exclusive, sustainable solution." 

Tesla announced Drori would take the helm at Tesla at the end of November. An Israeli engineer and tech veteran, Drori was tasked with bringing Tesla's first car, the Roadster, to market by the first quarter of 2008. 

Drori managed to bring the Roadster into production on time and the first vehicle was delivered to Musk, who was serving as the company's chairman at the time. 

To celebrate the occasion, Musk jumped in the Roadster and led four other prototype Roadsters packed with engineers down Highway 101 and University Avenue in Palo Alto, California. 

By mid-March, the company had met its goal of getting regular production of the Roadster up and running. 

At the time, Drori referred to the event as a "milestone for the company and a watershed for the new era of electric vehicles."

Tesla produced the Roadster, which priced at $109,000, until January 2012 and in total sold 2,450 of them.

By October, Tesla was feeling pressure created by the financial crisis. 

"The global financial system has gone through the worst crisis since the Great Depression , and the effects are only beginning to wind their way through every facet of the economy. It's not an understatement to say that nearly every business will be impacted by what has unfolded in the past weeks, and this is true for Silicon Valley as well," Musk said at the time.

Musk announced he would be taking over the company and that there would be layoffs. He also pushed the launch date of the Model S sedan, Tesla's next vehicle, from 2010 to mid-2011. 

By November 2008, the company's financial situation had worsened and Tesla was on the brink of bankruptcy. 

To help restore Tesla's coffers and speed up Roadster production, the company's board of directors approved $40 million in convertible debt financing.

"Even then, we only narrowly survived...We actually closed the financing round on Christmas Eve 2008. It was the last hour of the last day that it was possible," Musk
said in 2015.

Tesla unveiled its second car, the Model S, in March 2009 in Hawthorne, California at the SpaceX headquarters.  

By May 12, 2009, Tesla had already surpassed 1,000 reservations for the Model S.   

The $40 million in financing helped get Tesla through its darkest hour, but the company needed more resources to further develop its battery technology. 

Tesla and Daimler had already been in partnership for about a year working on an electric Smartcar. But by May, Daimler made a long-term bet on Tesla by taking a 10 percent stake in the company. The two companies agreed to work together on developing battery and electric drive systems.

In June 2009, Tesla also received a $465 million loan from the Department of Energy, which it repaid by May 2013.

Tesla offered 13.3 million shares at $17 per share. The company raised $226.1 million. 

Shares closed at $23.89, valuing Tesla at $2.2 billion. 

In late 2011, Tesla showed off a near-production version of the Model S to about 3,000 early reservation holders. 

Musk revealed that the vehicle would get 320 miles per charge and go from 0 to 60 mph in 4.5 seconds. 

"The oil companies said electric cars can't work, but the truth is, they don't want them to work. But here it is. They would say this car is the equivalent of a unicorn. Well, tonight you had the opportunity to ride a unicorn,"
Musk said at the event.

Just a few months later, Musk unveiled a prototype of the Model X, the company's first SUV. 

The vehicle's most novel feature was its falcon-wing doors. By February 2012, the company had amassed advance sales of more than $40 million. 

At the time of its reveal, Tesla aimed to have the Model X in production by 2014. However, it wouldn't actually enter production until the end of 2015.

In a major milestone, Tesla started delivering the Model S to customers in June 2012.

Tesla announced its plans to build its giant battery factory, dubbed the Gigafactory, in February 2014 and ultimately decided to built it in Sparks, Nevada. 

The original site was 1,000 acres, but in June 2015 the company purchased an additional 1,864 acres of adjacent land.

Tesla made a big push into energy when it unveiled the Powerpack and Powerwall at an event in Hawthorne, California in 2015.

Musk said that batteries were the "missing piece" of Tesla's business model and claimed that 160 million Powerpacks could power the United States.

The company followed up in a statement on its website declaring that "Tesla is not just an automotive company it's an energy innovation company."

Tesla had originally planned to launch its Model X SUV in late 2013 or early 2014, but production delays forced the company to push back deliveries by almost two years. 

The vehicle's highly-specialized features, like its signature doors made it complicated to manufacture on a mass scale.

Tesla began rolling a software update that activated its new advance driver-assistance system, Autopilot. Since late 2014, Tesla had included the necessary radar, camera, and ultrasonic sensors to make Autopilot work. 

With Autopilot switched on, a Model S could automatically stay centered in its lane and brake and accelerate to keep up with traffic. These remain the basic functions of Autopilot. 

Musk unveiled the much-anticipated Model 3 on March 31, 2016. 

He announced that the car would get 215 miles or more per charge and go from 0-60 mph in less than six seconds. Tesla planed a starting price of $35,000, though that price point was never widely available. 

The first fatal Autopilot accident occurred in May 2016, but word didn't get out about the incident until more than a month later. 

On June 30, government regulators revealed they were looking into a tie between the fatal accident and Tesla's Autopilot feature. Tesla issued a statement calling the incident a "tragic loss."

According to Tesla's statement, the Model S was driving down a divided highway when a tractor-trailer cut across the highway perpendicular to the vehicle. 

"Neither Autopilot nor the driver noticed the white side of the tractor-trailer against a brightly lit sky, so the brake was not applied. The high ride height of the trailer combined with its positioning across the road and the extremely rare circumstances of the impact caused the Model S to pass under the trailer, with the bottom of the trailer impacting the windshield of the Model S," Tesla said.

The company made a $2.6 billion bid to acquire SolarCity, a solar installation company run by Musk's cousin. 

Not surprisingly, the deal was controversial from the start, primarily because SolarCity was about $3 billion in debt and the deal was seen as a bailout. 

Further complicating the matter, Musk was also the chairman of the company.

In 2016, Musk revealed the second part of his company's "master plan," which outlined four key goals: 

1. Develop "stunning" solar roofs that seamlessly integrate with Tesla's battery storage.

2. Roll out more affordable vehicles "to address all major segments."

3. Advance its self-driving technology so that it is "ten times safer" than manual driving. 

4. Roll out a car-sharing program that enables Tesla owners to make money by renting out their autonomous car. 

Over the years, Musk has repeatedly touted Tesla's plans for self-driving vehicles that can earn their owners passive income. But this robotaxi vision is still a long way off. 

Musk made it clear in early 2016 that automation was the future for Tesla. 

During a shareholder meeting in June, Musk said that he saw a huge opportunity in "building the machine that makes the machine." 

So it wasn't all that surprising when Tesla announced it was buying Grohmann Engineering, a German firm that specializes in designing systems for manufacturing automation.

Tesla closed its deal with SolarCity in November 2016.

Some Tesla shareholders alleged that the deal amounted to a bailout that unfairly enriched Musk's family, sparking off a lengthy legal battle. Musk won the case in April. 

In 2017, the automaker dropped the "motors" from its name in a move meant to reflect the fact that Tesla no longer just sold cars. 

Tesla launched the Model 3 in July 2017.  The first cars went to Musk and Tesla employees. 

Getting the Model 3 — a more affordable, mass-produced vehicle — to market was crucial for Tesla to grow its reach to become profitable. What ensued was months of "production hell," as Tesla ramped up production to thousands of cars per week. 

At an event at Tesla's Hawthorne, California, facility, the automaker showed off its Semi truck concept. With a center-mounted seat, the Semi promised a range of 500 miles and a 400-mile range after 30 minutes of charging. Musk even claimed it would have self-driving capabilities.

The Semi has been delayed multiple times, but Tesla now says it will go into production in 2023. 

At the Tesla Semi's unveiling, the company took the opportunity to tease another future product: the Roadster. 

Tesla claimed the $200,000 sports car would hit 60 mph in just 1.9 seconds. After delays, it's set to go into production in 2023. 

In February 2018, the rocket company SpaceX, another Musk venture, launched its founder's Tesla Roadster into orbit during a test launch of its Falcon Heavy rocket. A dummy dubbed "Starman," wearing a SpaceX spacesuit, was strapped into the driver's seat.  

The car is currently orbiting the Sun. 

He also said that he'd "secured" funding. The tweet would kick off an SEC investigation into Musk's tweeting habit. 

The agency accused Musk of misleading the public, claiming that he knew he didn't have a deal to take Tesla private. Eventually, the two settled. 

Musk had to step down as the chairman of Tesla's board of directors. Both he and Tesla were fined $20 million. The agreement stipulated that, going forward, Tesla lawyers needed to approve any of Musk's tweets containing material information about the company. 

In March 2019, Tesla revealed its fourth vehicle to date. Tesla said the Model Y would be able to travel 300 miles on a charge and seat seven people. 

Tesla became the first western automaker to own a factory in China without a joint venture. 

The factory, located in Shanghai, would help Tesla better supply the world's largest car market with its most popular vehicle, the Model 3. 

Musk unveiled the Cybertruck at an event on November 21, 2019. Tesla said the radically designed truck would be able to tow 14,000 pounds and travel 500 miles on a single charge.

All did not go off without a hitch, though, as a demonstration meant to show the strength of the "armored" glass used in the truck left two huge cracks in it. 

The Cybertruck was supposed to be on sale already. Now Tesla says it'll hit streets in 2023. It's been beat to market by electric pickups from Ford, General Motors, and Rivian Automotive. 

Tesla started delivering the Model Y SUV to customers just as the global pandemic hit the US. 

The Tesla Model S Long Range Plus achieved an EPA-rated range of 402 miles, making it the first EV to do so. The company achieved this through cutting down on weight and maximizing regenerative braking.

The Model S has since been beat by the Air, a sedan from the California startup Lucid Motors. But the Model S is still one of the longest-range electric cars you can buy today. 

After burning through cash for years, Tesla hit its stride and started turning a consistent profit. The feat teed it up for being added to the S&P 500 index later that year. 

Tesla delivered 499,550 vehicles in 2020, just shy of its goal of half a million units. 

Amid a cryptocurrency gold rush, Tesla announced it had bought $1.5 billion worth of bitcoin in January of 2021. It said it planned to accept the currency as a payment for Tesla cars, but that didn't last long. 

The value of bitcoin has plummeted in recent months, meaning Tesla's crypto bet is likely under water. 

Tesla announced the Model S Plaid at an even in September 2020, and started shipping it to customers in June 2021. 

Tesla's most powerful and fastest vehicle ever, the Plaid has three motors that propel it to 60 mph in a claimed 1.99 seconds. It now costs $135,990. 

Tesla's share price skyrocketed for the better part of 2020 and 2021 as the company proved its profitability and grew sales. 

In October 2021, as its share price crested $1,000, Tesla's market cap surged past $1 trillion. It joined powerhouses like Apple, Alphabet, Amazon, and Microsoft. 

After announcing the move in October, Tesla officially moved its headquarters out of Silicon Valley to Austin, Texas in December. Musk also moved to Texas, where SpaceX's launch site is. 

After months of bureaucratic delays and environmental protests, Tesla kicked off production at its new factory near Berlin in March. Tesla is building Model Y SUVs there for the European market. 

Mere weeks after opening its third vehicle plant in Germany, Tesla opened a fourth, marking the occasion with a "Cyber Rodeo" party. The company makes the Model Y there. It also plans to eventually build the Cybertruck pickup at the sprawling facility.