Firemint did a great job with Real Racing, and the follow-up Real Racing 2. It really looks sweet when you include iOS 5 AirPlay mirroring features for 4 uses to connect to an Apple TV and race on your HDTV. You can link up your iPad, iPhone and iPod touch for some nice Party Play.
Party Play takes AirPlay to the next level of iOS gaming, facilitating wireless local multiplayer for up to 4 players simultaneously in a split screen display output to your HD TV using an iPad 2 or iPhone 4S as the host. Play in the comfort of your own home and experience the joy of championship racing with iOS 5.
Real Racing 2 is available in the App Store for $2.99 for the iPhone version and $3.99 for the iPad.