Excite Truck is an old Wii racing game from '06, and it's cheap as hell at this point (you can get it around $10 on Amazon, lol!). I loved it's single player campaign, and multiplayer split-screen is definitely a blast. I'd say the fun I had with the game was worth full price back when, and now that it's a meager pittance of cash, it's 100% worth the buy. Here's a trailer for the game.
If it had Wi-fi gameplay, I would bet I'd still play it to this day from time to time.