This is a fascinating idea that was developed by a research group at Japan's Keio University. By applying optical camouflage technology and using recursive reflectors, which "[reflect] light back in the direction of incidence," the researchers were essentially able to render the back of a Toyota Prius invisible, at least from the driver's point of view. Take a look:
What we found fascinating is their proposal that this could be applied to all 360 degrees. And aside from average motorists trying to back passenger cars into parking spaces, imagine what a boon this would be to folks driving delivery trucks, tractor-trailers, construction machinery and other bulky, blind-spot-laden vehicles.
Unfortunately, the technology may never come to pass. The concept was put forth in 2011, and there's been no word on an update since the video above was released in 2012. But tell me this thing wouldn't get Kickstarted in a heartbeat.
Via DigInfo TV