Small car, many motors.
Audi, which has been testing its A1 e-tron extended-range
plug-in around Munich, has started doing the same with a version that has a
conventional engine and two electric motors.
Audi's Dual-Mode Hybrid A1 e-tron concept car has multiple
drivetrain modes that let the plug-in hbyrid's 1.5-liter TFSI internal
combustion engine like both a conventional engine and an on-board generator,
depending on the car's speed and other conditions. The engine can also be
disengaged from the drivetrain by a claw clutch when needed. This is usually
when the car is operating in electric mode, up to speeds of 34 miles per hour.
Then there's serial mode, where "the combustion engine and the alternator
... produce electrical energy to support, relieve or substitute the battery
should it be discharged."