hypermile-ing, as its known, can help on the highway...find 65 mph and try to hold you foot in the same spot, letting the car slow down on uphills, and speed up on the downhills, never moving your foot...it will get you better milage than cruise control, but what a PAIN IN THE A**!!! I have done it a few times and see 2-3 miles more per gallon than cruise control...
2012 Focus SEL Blue Candy Metallic
1996 Bronco XLT 351W
Cant wait for Summer when I pop the top!!