I tend to take a camera with me everywhere. I do believe it is often the person or motor but I also believe a 40 pound bike will take a super human effort to reach 24 and stay there. I am not super human and much like sheldons speed calculator I do know what 90 RPM with a road bike and 50x12 brings to the speed table. The first picture is the speed and the second is the girl I was drafting at the time. Notice her left leg. That to me is effort. The reason the picture isn't of us in the draft was because she objects to a picture on shorts with Giant on the back.