Mercury’s Cyclone concept car featured extreme cab-forward design, and a transparent, electrochromic glass roof that changed tints depending on the lighting. Inside the four-passenger cabin was a television screen that showed what was behind the car via tiny rearview TV cameras, eliminating the need for sideview mirrors. No one power source was specified, but the concept was enginieered to house a V-8.
Source: www.chicagoautoshow.com