I've always laughed at the posters who brag about how fast they accomplished their commute on their bike, becuz, WTF for? If you wanna do some kind of training ride, do it on seperate occassion so you don't affect the quality of your work on the job. Besides, the bike commute is meant to slow you down, not keep you speeding along like you were in your motor cage; all uptight. Who the H cares how fast you are going besides yourself? Not me, not him and not her. You're a legend in your own mind, sorry. I learned long time ago that the pleasure of a bike commute is looking at the scenery; listening to sounds; stuff you missed while you were in your motor cage. If I wanna go fast, I'll hop back in my motor cage. Geesus, slow down, what's the rush to get to work of all things. I'm surprised it took you this long to realize there is an alternative way to bike to work besides "setting speed records". BTW, me thinks that's the way many cyclists end up in crashes; speeding along and not having time to react to a traffic situation; or slipping on gravel in some speeding turn.