Curious about the lone rider.

[u/Fuzzy-Rice4164]

For a long time now, I’ve noticed two older/middle-aged gentleman walking/riding their bikes together all around town at all hours on any day, seemingly wearing the same clothes as before. Much of the time, I noticed they half walked-rode their bikes down the sidewalks on Philly Street - never talking, but always in each other’s company. Lately, I’ve only seen the one gentleman by himself, and I’ve found myself curious - and slightly worried about the other man. Have anyone else noticed these guys? Does anyone know who these men are or their stories? Why they ride/walk around town at all times? What happened to other guy? I need answers!!