What do cars have that bicycles don’t? Lots and lots of things, actually, but one of those is a rearview mirror. While both cyclists and drivers have to shoulder check when changing lanes, cyclists additionally have to twist all the way around in order to see what’s directly behind them. Helmet- and handlebar-mounted side mirrors are certainly one way to minimize that twisting, but for people who like stuff, there’s another – mini rearview camera and monitor systems. Cerevellum has just started taking orders for one called the Hindsight, which now has a competitor known as the Owl 360.