On most bikes, the mirrors are little more than a legal requirement. Not only do they fail to show what’s behind you, but they also severely detract from the bike’s looks. Enter the Cerevellum rearview camera and bar-mounted display. Intended for bicycles, the 3.5” monitor doubles as a trip computer, speedometer and GPS locator. Plenty of riders already use cycle computers in place of clunky standard instruments. We can’t see any reason why the Cerevellum would work any differently.