High Quality Content by WIKIPEDIA articles! The XP-883 was an experimental plug-in hybrid car demonstrated by General Motors in 1969. Primarily intended as a commuter vehicle, the very small car had a fiberglass body with a design resembling the then-future Chevrolet Vega or Ford Pinto. The two-door hatchback had seating for two adults and two children, though the children sat in rear-facing seats and would enter and exit through the tailgate. It was powered by the combination of a two-cylinder engine and a DC electric motor. Electricity was stored in six 12-volt batteries placed between the rear wheels.