We have those in Brussels, from three different companies. The kick scooters are pretty much meh, but these NIU electric "50cc" scooters are another thing altogether. They're limited to 45kph here, which is fine on city streets (speed limit 30 or 50), but oh man are there a lot of people doing stupid crap on them. So far I've almost taken one out on a freeway with my GS and one has almost taken me out while cycling on a bike path--neither of which is a legal place to ride one. People who own 45kph scooters know these things, but all it takes to rent one of these is a cellphone and a car license. People who own scooters also know how to filter--those things are tiny but I get stuck behind them while filtering pretty regularly.