1967 AMC Rambler Amitron Electric Car Concept. In 1968, AMC showed an electric car, the Amitron, a three passenger vehicle powered by Lithium-Nickel batteries. To save weight and provide more hauling room, the seats were inflatable.

With subtle styling changes the Amitron was shown again as the Electron in 1979 as part of AMC's Concept 80 show, featuring four other forward looking prototypes.
Source: ginormus.blogspot.com & http://www.carstyling.ru/en/car/1967_american_motors_amitron/