The race is so much fun with vehicles especially in SideWinder. I have only played 2 players on the X-Box so far and I was playing one on one with my friend, a race is extremely fun. If your friend is driving a warthog about to win the race get a rocket launcher and make his car go flying.

I've done this to my friend he was at the second to last checkpoint. ( the one he was getting was in the tunnel area.) When he came back outside he couldn't find his car. So he had to run it. He still made it though.