Human Fuel Efficiency

According to the article on fuel efficiency on Wikipedia (what, you haven't tried the Wiki yet...click, dammit):

• Humans (see Human-powered transport):
  • walking or running one kilometre requires approximately 70 kcal or 330 kJ of food energy . This equates to about 1 l/100 km or 235 mpg in gasoline energy terms.
  • cycling requires about 120 kJ/km. This equates to about 0.36 l/100 km or 653 mpg in gasoline

Compare this to various forms of combustion engine transportation -

Transport Mode Load Factor Equivalent Passenger-Miles
(passengers/vehicle) per Gallon of Gasoline
Automobiles 1.57 34.9
Personal trucks 1.72 30.8
Motorcycles 1.22 55.0
Transit Buses 9.1 30.3
Airlines 95.8 33.8
Intercity trains 14.0 25.9
Commuter trains 33.5 46.1

Street-legal electric vehicles can get an equivalent upwards of 200 miles per gallon.

Over 635 m's per g;
gettin' fine;
keep moving when traffic's stuck...

And you wondered why I wanted you to buy me a bike.