I fell off one at 10km.h in my city going through a slow zone when it suddenly accelerated. I fell face first and broke my wrist. These things are lethal and it

I fell off one at 10km.h in my city going through a slow zone when it suddenly accelerated. I fell face first and broke my wrist. These things are lethal and it could have been a lot worse. Lesson learnt and I won’t go near one again - even with a helmet.