Fuel mileage mods and alternative fuels

When I first got my Dakota a few years back I put on a K&N air filter - no change. I put a Black Max tonnoue cover and it improved mileage on the interstate nearly 2 mpg - but no change driving it around town.

I live a mile from my work. Unless rain threatens (not likely in Georgia this summer) I ride my 50cc Honda scooter. It gets 100 mpg. I would ride my bicycle but I would get run over...
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