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TheOpel Twin was a prototype vehicle built byOpel in 1991. If was anelectric car with anexchangeable drive unit including the rear wheels. For an electric drive, the batteries and motors could be replaced by aninternal combustion engine including fuel tank, gearbox and an exhaust system.
The electric drive consists of two 10kW engines and one 29kWh battery giving a range of 200km, The petrol drive had an 0.8-litre, 25kW-engine with a 20-litre fuel capacity, giving a range of 500km (3.5l/100km). The Twin's première was at the 1992Geneva Motor Show.[1]