Powered by an electric motor, the car avoids carrying heavy batteries around by drawing its energy from the track itself. (evo.co.uk)
The hybrid version, because of its very heavy battery, also weighs about 400 lbs more than the gas version. (edmunds.com)
It has a motor and a pump fitted under the bonnet that can perform without help from the petrol engine, and doesnâ $ ™ t require heavy battery packs. (thesupercars.org)