One of the wild things in Smil's "Energy and Civilization, a History" is that cars generally don't do better than walking if you factor in the hours spent worki

One of the wild things in Smil's "Energy and Civilization, a History" is that cars generally don't do better than walking if you factor in the hours spent working to pay for the expenses of owning and operating the car. Your total miles travelled per hour spent is roughly the same!