What is the Silver car in Tony Starks workshop next to the Saleen S7 in the movie 'Iron Man'?

Its a prototype all-electric sports car called a "Tesla Roadster"

* 248-hp (185-kW) electric motor * 0-60 in under 4 seconds * Range of 220 miles, full recharge in 3.5 hours * Capable of 125 Mph