The ultimate plug-in hybrid, the Karma Revero four-seater is powered by two electric motors and a 21-kWh battery. This drivetrain produces a combined output of 403 horsepower and 981 lb.-ft. of torque. A turbocharged, 2.0-litre four-cylinder engine acts as an on-board generator, extending the car's electric range that’s estimated at 60 kilometres. The Revero’s braking system helps recover energy.