you know how locomotives work? well even though it has a very powerful and very big engine, it gets 10 times as much mpg as a regular car. why? it uses a special hybrid system that uses the diesel engine to run a generator which runs electric motors. at 1000rpm with this system in a car, it generates twice the power of the Tesla roadster without charging or any batteries powering the motors. if the car companies use this tech then the hybrids with the batteries wont cause twice the pollution of a regular car. if this system is used then you will get 100+ mpg flooring it