If it has no price, and just shows something like "Cr. ----", then it will be unlocked as a prize. Try doing some more race events.
you can get it as a prize car by completing driving missions 21-24
You have to buy it, 8 000 000cr
You need to win the Infinieon car trophy.
Ford GT Race car Gran Turismo Edition
Driving Mission 3
You Can't!
Toyota GT-One race car
Only if you unlock them as a gift car when complete race series
no its impossible i even havent played gran turismo 5 yet
Before a race, in the race menu, select setting (this is the place you select part on your car)
i need cheat for car
No, however you can gran turismo 5 and then tune from car from there
You can`t sell your cars on Gran Turismo PSP.
GTO (Gran Turismo Omologato) Gran Torino Grand Prix
You can do slip Stream on Gran Turismo for psp by simply pressing up when the car is at its full speed