I commute 14 miles per day. My coworkers give me a little grief but when I tell them that I have only bought one tank of gas in the last month they do think that is cool. The only problem I have is some smart ass thinks its funny to turn my head light on and leave it until I discover that it is on. When I find out who is doing it he will be buying me a pack of batteries. By the way I drive a RAM truck with the Hemi and I was buying $80.00 of gas every 10 days so only putting in $30.00 a month is very nice.