FAST!

Partly because I topped off my tires with air and put fresh lube on the chain this morning a few minutes before I left. Temps in the low 50s. No wind to speak of. Overcast.
Saw a few cyclists. Passed one kid on an MTB while reeling in a guy on a road bike who was moving along pretty well (~20MPH) but wearing dress clothes. Stayed behind him until he went another direction. Then another guy on a road bike came up behind me at a red light, and went before the light turned green. I waited the few seconds for the green, then testosterone got the better of me and I sprinted past him up the hill.