Electric car, efficiant?! Pahh
They shouldn't include Electricity powered cars.
So many seem to forget where the electricity comes from, burning huge amounts of coal/gas/oil. So you get 40% efficiency at most before you've even moved the car!
Though it does move the exhaust gas hundreds of miles away so you don't notice it.
Maybe in the future, say 50 years, when the electricity supply is all made without fossil fuels (because it has run out) they could have an Electric Car X prize.