I sometimes sit in sidewalk seating at a restaurant in Cambridge near a small theater I have a subscription to. The (protected) bike lane in front is a pretty horrifying combination of conventional bikes, ebikes, things that I assume are high powered ebikes but look almost like motor scooters, escooters, pedestrians caught in the crosshairs, etc. And a ton of the vehicles just blowing through the lights at the next intersection because they're more or less bikes and that's pretty common behavior.