While stuck in traffic this morning, I happened along a sight that I don't see nearly as much as we would 10 years ago; the sidewalk bicycle repairman.
Back in the day with all the bikes on the road, and the horrible materials they were made out of (rusty steel and very poor inner-tubes for the tires), there was literally one of these guys on every corner. Either just there to pump up your tires, or give you a complete overhall, while you waited.
This old guy had an impressive set of tools spread out along with a multitude of replacement parts...mostly rusty used parts from older bikes.
Here, he was working on the front wheel bearings...
I didn't count on the street sweeper to get into the way of this at the end...but, there ya go.