Hi there! there's a solidworks designed sportscar, inpired by Caterham 7 and a bit of hot rod touch..
Gamma must be a lot higher ... on the first 2, you probably want that effect. But on the first one, you should try to get a highlight on the front end of the car as well ... could give a nice effect !
Gotta say, I am looking for a good car model for free somewhere to try a render like your first one .. I did some thing already, but the car models I find are not smooth enough at all .. so the effect kinda gets lost.