Comment by xyzzy_plugh

The person riding the bicycle does those things, the bicycle is a tool. A tool can't follow rules.

You can take roller skates off, get out of a wheelchair, and get off a bicycle.

Imagine you were wearing roller skates being pulled by a dog.

Imagine you were sitting in a chair, with a roller skate bound to each leg of the chair, rolling down a hill.

Imagine you were a flea in a roller skate rolling down a hill.

Imagine you were a dog in a wheelchair rolling down a hill.

Imagine you were a flea on a dog in a chair with roller skates on its legs rolling down a hill.