[GSlob]

"(how about 500 miles per gallon of gasoline?)"
Well, the greenpisser could pedal 500 miles with 16 pounds of food rations (at 2 pounds a day) and pick his water as it happens along the road. And if he could eat the seasonal vegetation along the way, his fuel economy would increase still further.

[Sgt_Schultze]

...how about 500 miles per gallon of gasoline?

Great! If mandating higher mileage cars is an effective tool, mandate 500 mpg. Problems solved.