Earlier quoted context omitted.
Out in the (poorer) suburbs, the only adults who bike are those who can't afford a car, or have had their license revoked.
Perhaps. I think suburbs with high density of poor people used to be less common in the past so I am less familiar with the dynamics there.
I'm not joking. Cities tore down their tenement housing "projects" because of the rampant amounts of crime, and the residents went to the suburbs to live in Section 8 private housing. It's one of the reasons (there were many) that violent crime decreased so sharply beginning in the 1990s: the criminals were more spread out, diffusing much of the network effect.