I used to see guys jamming down Palomar Mountain and Montezuma's Grade all the time, but I never saw them passing motorcycles. Of course, we were exceeding the speed limit by a click or two at the time.

I've gone about 55 downhill on a road bike in kit. I got a nasty high speed wobble that threw my hands off the bars, crotch slammed to the top tube, left knee hit the front wheel which was enough to kill the wobble so luckily I didn't crash. Surprisingly the tire took a lot of meat off my knee.

I lowsided a moped going around a corner at "only" 25mph while wearing only a bathing suit and it took months to grow all my flesh back. Sometimes I think road rash is worse than broken bones.

Those experiences make me pretty timid about hauling ass in shorts.