Vanderhall - Our Venice and Carmel models feature a mono-aluminum chassis with a composite ABS body and a 1.4 or a 1.5 liter, four-cylinder turbocharged engine mated to a 6-speed automatic transmission. Edison models feature a fully electric drive train.
That's a big engine just to charge the batteries. Mazda has prototypes of using a small rotary engine (run when needed at a constant speed) to charge their batteries.