This is the current car list, as far as I can gather, from the screenshots:
Diahatsu Copen
Lotus Elise
Golf GTI
Nissan Skyline GTR Prototype
Audi R8
Nissan Skyline GTR R34
Mercedez Benz SL55 AMG
Suzuki Swift Sport
Audi TT
TVR Tuscan
Nissan Xanavi Z
Dodge Viper
Ferrari F430
Mitsubishi Evolution X
Renaultsport Clio V6
Honda NSX
Nissan Skyline R32/R33 (not sure which it is)
BMW Z4
Ford Mustang
Any I missed?
Digg.