Especially when you consider that an hour or two lost from one fender bender will account for more than all of the 5 or 10 seconds, added up over the years, that they save by driving aggressively.

Although it's not foolproof, with these mild mornings I could save even more time - I figure a minute maybe - by biking even slower in casual clothes and skip the cleanup entirely. It's a balance between the need for speed and getting there on time.

To be honest, if I take my road bike and go all out on the direct street route, hit the lights green or at least in the gaps, I can do it in five minutes less including the shower. But that's highly dependent on the traffic so I seldom try it in a time crunch.