Heard of Pad Racer? If you’re busy sensually yet inadvertently rubbing your iPad against your shirtless self, you probably have. Once or twice. For the rest of you, Pad Racer is essentially slot car racing for Apple hardware. Using your iPhone/iPod Touch, you control a tiny stain of pixels – er, ‘car’ around a track displayed on your iPad. The play control looks pretty good, and I can imagine multiplayer matches are totally fun fun super lucky best time. But why am I writing about a single iPad app? Well, the latest version of Pad Racer lets you set two iPads next to each other, allowing for double the…