With fuel prices over $4 a gallon nearly everyone is trying to save gas these days. This week's Friday site doesn't just give you hints for better fuel economy it also helps you track your mileage. CleanMPG is a forum for hypermilers to share gas saving tips and to take pride in achieving fuel economy well in excess of the EPA estimates.

I admit that some of the techniques can be a bit odd or even dangerous but others are valuable especially for folks who are caught driving a car or SUV with a less than stellar MPG rating. As one columnist noted these days it may be more cost effective to simply squeeze a few more miles out of tank than to incur the transaction cost of unloading a gas guzzling beast.