Bear with me...I hardly ever play video games. But I've had some time off from school, and I borrowed my little cousin's PS2 while he's out of town. I was playing motoGP (the first one) and as you do the 'challenges' you begin to unlock riders and stuff. What does this mean? Can you do anything with Kenny Roberts jr. after you've gotten him as a rewards for completing a challenge? Or is it just useless?