Jewelry Boutique

My son is turning 9 next month. We are getting him a new bike and new helmet. We were also considering getting him a skateboard. We don't have cable at home so he doesn't really have any TV Shows that he follows. He likes WWE and anything to do with cars. He really likes golf but he already has golf clubs that still fit him. Same with baseball, he already has a bat, glove, and lots of balls. He doesn't normally ask for alot so it's a little difficult to shop for him. What are other 9 year old boys into.? And suggestions would help.
We already have a wii and a ps2. We have plenty of games for the ps2 but only a few on the wii. But he's more interested in doing the real activities rather than the game. We have wii sport and wii fit plus. We also already have the movie cars.