Okay. I'm starting a fresh file. I never did beat arcade mode fully, do you get any vehicle for fully beating arcade? Before I spend the time to do it I wanna know =/
i'm pretty sure that you unlock a few of the faster cars such as the tvr speed 12, nissan r390, toyota gt-one if you beat all the tracks on every difficulty setting.
I don't remember if you get a vehicle, but check the prize car lists and see if it's an event. I do know that you need to complete Arcade mode for 100% completion of the game.
And a reminder, if you run the races at HARD difficulty the first time through, it automatically fills in wins for the EASY and NORMAL slots, too.
Yes, you win a car at 75% completion of Arcade mode. Then you win another one at 100% completion. I won't spoil the surprise; you'll have to do some searching if you need to know the answers.