I live in Pittsburgh PA. For those who are familiar with Pittsburgh's topography, you know this city is similar to San Francisco. I have never gotten better than an average of high 30's, often low 30's. I am interested in hearing from others in cities that "all up and down" to see if my problem is to be expected, or if I should ask the dealer if there is some problem causing this low milage. Certainly, I know that the hills don't heop millage. I am just unsure as to whether my experience is typical of Prius performance in the "hills"