I know my cost time with my probe I owned was considerable, and there were hills (not mountains) that I would pick up speed coasting over 65mph. An aero car with the right grades and gliding is going to make a difference at any speed. My blazer on the other hand doesn't cost anywhere, and there are big hills that I can't gain speed at all where I would with a car of any sort.
Last edited by autoteach; 09-21-2010 at 09:59 PM..
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