Not a common scene

While shooting at Coolidge Park I saw this fellow riding around on his seated tire. I do have a few questions:

1.) How does one get on that thing to begin with?

2.) What does one do when you need to get down?

3.) Is one still able to reproduce when one slips and falls off and/or able to go #2 (depending on the direction in which you fall) ?

Let's all think about that shall we...