Originally Posted by cooker

I don't know why I'm bothering, since at this point I can only conclude you are trolling, but for the benefit of anyone newly reading your post, that only works if the cyclist can eat gasoline. If he eats food, then his gasoline mileage is 1/10th of what you claim, because 10 units of gasoline produces 1 unit of food.

If the cost of refining fuel for cars is the same as refining it for tractors and transport trucks, then it washes out - if you have 31,000 kcal of refined fuel (a gallon), you can put it in your Prius and drive 50 miles, or you can give it to food industry to produce 3100 kcal of food, and use that to bike 75-90 miles.