A lot of you have to remember, not all of us are commuting on heavy commuter bikes with full racks and panniers that are geared and fit for a slower ride. I personally ride a fixed gear track bike that weighs a tad over 17 lbs and absolutely flies. My commute is about 8.5 miles in the warmer months, 7.7 miles in the winter on my fat bike. If I time my ride right, I can get most of the green lights and have minimal stop signs. It is not uncommon for me to pass cars or at least ride right with them on the stretch of road that is 3 lanes wide and the speed limit is 25 mph.