I bought a pair of Yamaha C3 scooters... should be good for 115 mpg. EPA doesn't test bikes, so I guess I can't include my results here... though I'm not sure I'd be able to baby a scooter that only has a top speed of 40 mph enough to get the 128 mpg I'd have to get to even break the top 20!

Charles, you should be able to hit at least 20-22 mpg with your truck if you keep the speed down and keep your foot out of it.