Turtles
We have a skateboard ring with a difference on the second floor. But we call our skateboards “turtles”. Just imagine – you can sit down and ride a skateboard!
The turtles work according to the same principles as a skateboard. Sit on a turtle and propel it forwards by rocking the handlebars forwards and backwards. This causes friction between the wheels and the floor, which converts the sideways-directed force to a forwards-direct force.