Originally posted by PatriotAr15:
 I know of a way to save gas... Drive in a higher gear (if you drive manual). My truck is supposed to only get 25mpg, but I can squeeze out to 30mpg if I drive under 50mph, on Gear 5. Course, my truck gets pretty sluggish, and it only really works on long stretches of flat road (hard to find here in Wyoming). 
Thats a good rule of thumb.  I try and keep my RPMs below 2k as the max.  It looks like I can add an extra day before my fillup of a standard daily drive to work.  I saw a guy on CNN.com that does whats called Hypermiling to his car and he gets 50mpg.  He never uses the breaks and never comes to a complete stop if he can help it.  He even push starts his own car.