Earlier today, I picked up a copy of Gran Turismo for my little PSP.
The game does NOT have a Career Mode as Playstation versions of Gran Turismo have previously had. In those versions, you can collect cars, compete in multi-car races, and keep a garage with a collection. In this version, the gamemakers have NOT incorporated those features. Basically it is single player race mode, time trial mode, and then a series of driving challenges to win you money and open up new cars you can buy with that money.
I think the purpose of this game was to give people a copy of their favourite tracks in the world—-to keep in their pocket, and play whenever one wants. And for that purpose alone, GT for PSP is a superstar. Fantastic graphics and gameplay, and superb rendering of classic race tracks such as Suzuka, Nurburgring, Laguna Seca, etc. All in all, a very cool idea. I AM HOOKED ON the NURBURGRING, as always!