Indeed, even when using fossil fuel as the energy source for both a gas-powered and an electric car, the well to wheel efficiency is 14-33% vs 42%, respectivly.

Indeed, even when using fossil fuel as the energy source for both a gas-powered and an electric car, the well to wheel efficiency is 14-33% vs 42%, respectivly. Source (2013): http://www.asahi-net.or.jp/~pu4i-aok/cooldata2/hybridcar/hybridcare.htm http://www.asahi-net.or.jp/~pu4i-aok/cooldata2/hybridcar/hyb... (it also claims a 42% efficiency for diesels on highways)