Acura fans couldn’t get enough of Tony Stark’s eggplant-colored Acura NSX concept car in “The Avengers” movie… quite possibly because audiences were only allowed a glimpse of the futuristic speedster. Mr. Stark, aka. actor Robert Downey, Jr., appeased some of the masses by driving the sexy sports car to the movie’s premiere. But even then, die-hard NSX fans wanted details. Like, for example, the fact that Stark’s ride is actually built on the frame of a 1991 NSX and still sports the original stock cassette player! So, here’s the scoop as provided by Edmunds’ InsideLineVideo. Enjoy!