Thanks but that brings up the real reason for my question, and that is that recently I was on highway I5 (a 70-mph, two-lane road with a lot of slow trucks) in California cruising at 80 mph, and I wanted to quickly pass a 'road boulder' that was lodged in the fast lane, so I moved to the right lane and stepped down on the 'gas' pedal and was surprised at how slowly the car accelerated since at lower speeds it accelerates much faster. Is that normal?