Did you see the life-size Mario Karts created by West Coast Customs—which is primarily known for helping rapper Xzibit add dozens of TV screens (insert "I heard u like ___" meme here) to cars in MTV's Pimp My Ride? Well, you could have one of your very own if you enter GameStop's PowerUp Rewards contest.
The only real requirement in the "Epic Reward Giveaway" is that you have to be a member of GameStop's Rewards program, and make a purchase or trade something in during December to be entered into the drawing. Who could resist owning something like this?
Just be aware, you'll also be competing… against ME!