It was a terrible idea, because the city had 2 mandates to allow them to come back - 1. Speed caps (10mph), and 2. mandating that all scooters were banned from sidewalks.

If you know anything about how terrible Miami drivers are, you'll quickly realize that those mandates were designed to make the scooter idea fail. Forcing someone to go 10mph on a busy multi-lane road known for bad drivers is a death wish.