Product placement or not, but 2007 Audi R8 it’s the perfect car for genius Tony Stark to drive in this huge 2008 superhero hit “Iron Man”. It is one of Tony Stark’s cars, and was the main car he used throughout the course of the first film in the “Iron Man” franchise.
Tony’s 2007 Audi R8 can be first seen, when Tony fixes the engine of his 1932 Ford Flathead Roadster. Later on, he uses it to drive to the airport to meet Rhodey, in which they would fly off to Afghanistan.
Tony’s 2007 Audi R8 car’s plate number is Stark 4.
By following link some ideas about what does it take for a car maker to have their cars featured in a movie? And here is all the cars featured in “Iron Man” (2008).