As I get ready to post a review of a cool, bike-oriented gadget, I point to this wonderful, does-it-all computer for the bike: the Cerevellum Bike Computer.
Sure, it costs as much as a laptop, but it has features: the usual speed, distance and time, as well as a GPS, elevation gain/loss, wattage produced, and rear-view video.
Yep: a USB-based rear-view camera is one of its possible accessories.
Note that the thing is still a prototype, and there are still other questions to be answered (namely battery life). But it’d raise Garmin’s game a notch, right?