This is an application made for iPhone: Here’s a guy who’s rigged up his Nexus One smartphone as an accelerator for slot cars.
Here are the words from designer:
One of the first results of this is a library for creating peer to peer LAN connections between AIR applications, with a strong focus on mobile to desktop applications. I’ll go into more depth about the LAN library in a future post, but for now I wanted to share something I built on top of it… the Nexus One Wireless Slot Car Gas Pedal.
You can see this wireless slot car gas pedal in action: