Removing weight is cheap and it always works. Crap in your car adds weight - remove any uneccesary junk you're carrying around (if any).Don't use the back seats much? Take them out. Spare tire and jack? Take them out and bring along a can of fix-a-flat instead (and hope you never get a flat tire or just get AAA...).Still want more weight loss - Floormats, carpeting and sound deadening material aren't completely necessary to drive the car either (but they are nice to have if you drive any amount of distance...) so if you're looking to go fast on the cheap, rip 'em all out too.Do as little or as much of the above as you can tolerate and with most of it you can just put it back in the car if you get sick of not having it.