The Cerevellum Rearview Monitor is a rearview monitor you mount to the handlebars of your bike. It's headed to production soon and will sell for $200. It comes with a camera you can mount anywhere and features "a 3.5-inch screen and a 4-hour battery life, along with 32MB of storage for workout data and four USB ports for expansion modules." Sweet, expansion modules. I got a look at some of them and they're what you'd expect. A GPS module, a heart rate monitor, and one that calls 911 after you slam into a truck because you weren't paying attention to the road.