I realize you're being slightly snarky... If the chart on the website is to be believed, gasoline is second only to diesel in terms of energy density of viable

I realize you're being slightly snarky... If the chart on the website is to be believed, gasoline is second only to diesel in terms of energy density of viable fuel sources. The power consumption of a vehicle has little to do with gasoline, though there is an important consideration for efficiency in terms of converting the fuel to linear motion (internal combustion engine and drivetrain). Vehicles powered by any method are incredibly power consuming. Your average vehicle weighs more than 10x the weight of a single passenger, or in many cases 10x the weight of 2 pax. Public transportation (impractical in the suburbs), or self-navigating vehicles (more practical) would seem to be a key in reducing the vehicle:occupant weight ratio and increasing overall efficiency.