Shared bicycle and electric scooter in one shot. You unlock (and pay for the use) with your mobile.
The idea of sharing isn't bad at all, but there are too vague rules and you know people... They leave them everywhere they want and with a scooter going 25km/h (15.5mph) on the pavement (sidewalk) there is a relevant risk of injuries also for walking people.

It's been two years since Prague has banned Segways on many places because drunk tourists were pretty dangerous on them. At least 610 new "No Segways" signs were needed. And now we have electric scooters in their place.