I Agree with what alot of you are suggesting, a muscle car would be great, and as a few have suggested, some sort of mustang/camaro/challenger amalgamation would be ideal, and to have that v8 tone would be a huge attraction to the game
Id like to see the musclecar with alot of grunt, but bad around corners (so it could compete with say, rb4, RAC, ect)
Another suggestion would be to add a dedicated dragster to the game, a top fueller, capable of sub 5sec passes on AU 8 lane. (itd be cool to see some unique setup options for such a car, with boost level, (supercharger) nitrous level, ect
And, finally STAGING IN DRAG RACING!!