The guys over at Real Racing have always been working hard on their apps, they were the first to have airplay enabled on the Apple TV and multiplay screens via the Apple Tv, Well just recently they have released Real Racing 2 for the Mac AppStore and they’ve not disappointed. This release featured an intuitive control via your iDevices.
I have uploaded a video demonstration with my iPhone 4s, It was very simple to set up, all you do is input your unique URL in the mac app settings, and add the page to your home screen and you’re good to go. It’s literally a VNC that makes use of the accelerometer to steel the cars. you can control the mouse and also brake when on the track. making it a very useful controller.