If it takes you about an hour to go one way, and you travel about 12 miles an hour, you must go about 24 miles a day. If you normally would drive a larger car, you would use about a gallon of gasoline a day for that trip, at 24 miles per gallon. As a motivational tool, you could try what I did for a while. Get a bunch of dollar coins from the bank, and every day you ride put two of them into a jar (representing two dollars per gallon gasoline price).