Originally Posted by
Stealthammer
Maybe they are just doing intervals.....

Exactly! I commute because I don't want to ride the trainer at home. My 17 mile "commute" with a buddy:
http://www.youtube.com/v/2qe3CeIqSXs?version=3&hl=en_US&rel=0&hd=1
Anybody who rides a bike to commute is taking a risk... some more so than others but that's OK.