This company was founded by RVers, and we design all our products with RVs in the forefront of our thinking. Sometimes we forget that other folks might be interested in getting a little better fuel economy. This was pointed out to me rather forcefully this morning when we got a call from a trucker who ordered a VMS. He will be far from the first professional driver to use our products. Kenworth and Peterbilt have been using our products for years as both a driver tool and a data analyzer in their in-house test fleets. Allison has a batch of VMS units as well. But most gratifying to me are the professional truckers that have discovered our products. One fellow stands out in particular. He is a route driver, running basically the same 300 mile loop every day in North Carolina. That makes him the perfect test to see if all this stuff we say is true - whether you really can save fuel and get better performance with a VMS. You might think that an experienced professional wouldn't need an electronic device - it should already be instinctive. He says it took him less than a week to discover otherwise. By watching carefully and experimenting - and even taking notes so he could compare his results on the same hills each day - he was able to adjust his driving with amazing results. He went from getting 5.0 mpg to 5.5 mpg - a 10% increase. At current prices that's almost a twenty dollar bill extra he gets to put in his pocket every day. So if you are a trucker - Welcome to SilverLeaf! We're glad you found us.