Speaking of the Prius... Real world expierence.

[PoorMansCat]

I drive a ford ranger so i know it has a cruise control, and i followed another ford ranger driving just as you described, only difference between us is i was carrying a fairly heavy load and the truck in front of me was empty. Ticked me off having to bleed my speed off while going up hill.

me too, I was pulling my 5er that weighs between 13-15K lbs. Had my cruise set at 70-72 mph, and on every freakin hill, he would fall off 10 MPH. causing me to have to get out of the cruise and hit the brakes going up hill.