So I just got a nice new Prius 3rd gen. The salesperson informed he of one oddity when driving. That to get the best mpg, after i get up to "cruising speed" I need to take my foot off the accelerator and then put it back on. When I am accelerating from a stop, I see the "MPG" indicator slowly trend down, sometimes to nothing as I ramp up my speed. The only way this doesn't happen is if I accelerate to 40ish over 1 minute (and the people behind me would no doubt kill me). When I do as he told me, after achieving some cruising speed, my pmg does jump to 100 and level off closer to 40-50 (assuming i can re find the sweet spot on the pedal). So my basic question is this. Do I hold the pedal to the floor, accelerate quickly to cruising speed, then do the off the pedal, on the pedal trick? Or do i have to accelerate more slowly to come up to speed, but still do the trick?