Very interesting GT PSP / GT 5 interview with Kazunori Yamauchi

[Gearbox]

PullusPardus said:
he mentioned that if you buy a car in the PSP version it will still be yours in GT5 or GT6 and so on.

personally i find that easy. as sooner or later i'll be stacking up the best car and win every race with it.

u can probably choose to have them or not