Differences between a race car and a street car – Acura TSX on the track

We visited the Detroit Grand Prix to see the Pirelli World Challenge action and interview Realtime Racing driver/owner Peter Cunningham ahead of his race on the Belle Isle course. Peter showed off his GTS-class Acura TSX and talked about the difference between stock production cars and racing cars. Check out http://www.autoweek.com/racing for much more motorsports...…