There is an interesting column "How to get prize car rarer" in Japanese book GRAN TURISMO Official Guide Book (1998). operation test for acquire prize car rarer method based rumors at the early of 1998, the effective method is only one ; "Watch the ending video on arcade mode" before the race. SCE comment ; "It has possibility of affect a acquire car program" I tryed it in 1998, and was surely effective. got car rarer within raced 3 - 5 series. but I don't know about case of playing PAL or NTSC-U/C version. and one tip in GT1, I think that many people have already done it. same car (same year/model/equipment) can use the same setting file in common. that is to say, able to own cars different color for 1 car in garage. there is incompatible between prize cars and the commercial cars. (example, Evo-IV, R32 GT-R, SVX and more..) go to place able to load/save settings. and load setting data of other color. files loadable glowed. after load yellow car file, color changed. in case of Concept Car, no compatibility between B-licence orange car and U.S.vs UK series yellow/purple car.