I fetched my bike from Waterloo this weekend and so I decided to take it to work this AM. I arrived in 1/4 of the time but then realized I forgot my computer power adapter at home. No problem, because I can bike back and forth once more and still have made the trip faster than walking would take. Except: back tire went flat hopping a curb on the way back. I walked my bike the rest of the way home, picked up my power brick, then walked to work as per usual. Blah ..