Audi R8

The Audi R8 has been in production for almost four years now, so it is certainly time for the convertible version to make its debut. The Audi R8 convertible has been spied on the set of Iron Man 2 being driven by Robert Downey Jr. in California. The car is set to debut later this month at the Frankfurt Auto Show.

A 10 cylinder engine is expected to debut in the uber Audi for 2010, so we can expect improved performance figures over the current V8 powered Audi R8. The Audi R8 currently produces 420 horsepower which it sends to all four wheels through a six speed manual transmission and will reach 187 mph. The V10 should be able to push the R8's top speed closer to 200 mph.

Celebrities that have been seen driving the R8 like Robert Downey Jr, Jay Leno, Seal, Reggie Bush, Hugh Grant, Jimmy Rollins and Zac Efron.