Taking engine weight into account for automobiles, electric cars have much lighter motors and the extra volume/weight can be used for batteries. Consider 30l f

Taking engine weight into account for automobiles, electric cars have much lighter motors and the extra volume/weight can be used for batteries. Consider 30l fuel capacity = 30kg of battery. Petrol engine is about 300kg, Electric motor about 30kg. So that's 270kg that could be used for batteries (and is in the Tesla). And since the batteries can be anywhere in the vehicle, there's a benefit to that too! Ref: http://auto.howstuffworks.com/tesla-roadster.htm/printable http://auto.howstuffworks.com/tesla-roadster.htm/printable http://en.wikipedia.org/wiki/Tesla_Roadster http://en.wikipedia.org/wiki/Tesla_Roadster