Photos: Tesla Motors electric cars over the years

A Tesla Roadster is on display at a showroom in Menlo Park, Calif., in 2008.

Workers assemble a Tesla Roadster at their showroom in Menlo Park, Calif., in 2008.

Elon Musk, CEO of Tesla Motors, poses with a Tesla car in front of Nasdaq after the electric car maker’s initial public offering in June 2010 in New York.

Matt Wilson looks at a Telsa Model S beta prototype vehicle in Santa Monica in 2012.

A Tesla Model S is displayed after winning the 2013 World Green Car of the Year award at the New York Auto Show in 2013.

A close-up view of a Tesla Model S.

A detail of a Tesla Model S in 2014.

Michelle Chang wipes dust off a car in a Tesla Motors store in Pasadena on opening day in August 2014.

Elon Musk announces a dual motor version of Tesla’s Model S sedan, the P85D, at Tesla’s Hawthorne Airport facility in 2014.

Tesla announced a dual motor version of its Model S sedan, the P85D, that also has an optional adaptive cruise control feature, in 2014.

A Telsa car on the assembly line at Tesla’s factory in Fremont, Calif.

Tesla Model S electric car in 2009.

A 17-inch touch screen is the control center in the new Tesla Model S P85D. Its dual electric motors put out the equivalent of 691 horsepower. It’s priced at $104,500.

The new Tesla Model S P85D produces extra power with the addition of a second electric motor putting out the equivalent of 691 horsepower. It’s priced at $104,500.

Franz von Holzhausen, Tesla Motors chief designer, talks about the doors on the Tesla Model X at media previews for the North American International Auto Show in Detroit in 2013.

The Tesla Model X concept is on display during media previews for the North American International Auto Show in Detroit in 2013.