(IIRC) The Top Gear guys did a stunt where they just put a gasoline powered generator in the back of an electric car and used it to power everything without a lot of batteries. Got good mileage up to the point where the exhaust from the generator nearly killed them.
:’) This article sez diesel, maybe they did it twice?
Top Gear Builds a Volt of Its Own
http://www.wired.com/2009/11/top-gear-builds-a-volt-of-its-own/
Electric cars day trip, part 1/2 (Series 17, Episode 6)
http://www.topgear.com/videos/jeremy-clarkson/electric-cars-day-trip-part-12-series-17-episode-6
Electric cars day trip, part 2/2 (Series 17, Episode 6)
http://www.topgear.com/videos/jeremy-clarkson/electric-cars-day-trip-part-22-series-17-episode-6
sidebar:
Tesla’s P85D is the best car Consumer Reports has ever tested
http://www.cnbc.com/2015/08/27/teslas-p85d-is-the-best-car-consumer-reports-has-ever-tested.html