I do try to catch fellow cyclists when I see them ahead of me, but more as an excuse/goal to push myself than any sense of competition with them. I often get passed going up some of the steeper sections of my commute, usually when I've had to stop at the light and get rolling right at the beginning of my commute. I have to resist the urge to push too hard before I'm warmed up (and they usually have the advantage of a rolling start). My recumbent is a bit heavier and the motor *cough cough* still needs some work.... I can slowly gain ground on the flats and slight down hill sections, but most of my 4 mile commute in is a gradual up hill ride to the airport.