Greyhound, you'll unlock a lot more tracks and cars in arcade mode by playing the career mode. if you enjoyed trying to drive the cars in arcade mode then you might get hooked by the career like most people do. the funnest part of GT is building up your car collection and tuning them to their full potential. I'll send you a car if you want.... something that will get you started in the A and B spec modes.
Looks like we'll need a gt5 forum pretty soon. If you need any cars just ask lakk

. You know or me.. if you really have to
I've been playing online a lot more lately now that I've got some fast cars and some people to race with that I've met already. Join me any time you see I'm online and we can trade some cars. I send a car almost everyday, lol.