> Ordinary fatbikes aren't fast

Most fatbikes have a much more powerful motor than a regular e-bike, and can be used without pedaling at all. They are listed as 250W, but it's actually a software-limited 750W motor. Local vendors provide unlock instructions along with the bike.

Instead of the 25km/h legal limit, they can go 40-50km/h: https://v8fatbike.com/how-to-unlock-ouxi-v8-speed-limit/

It's just a motorcycle in disguise. Then, to make matters worse, they weigh 30-40KG + two 12-year-olds on top - that, combined with reckless riding, can do a lot more damage than a boring cycling incident.