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/hyb... (it also claims a 42% efficiency for diesels on highways)
>The big advantage of Gas is you can transport the product without the product losing energy.
the cost of transportation and infrastructure like for example gas loading terminals and gas stations is higher for gas than electricity. That is the "loss of energy".