amazing light painting

I once locked they boys and I in a toilet with a small light. I set camera to expose for 30sec and during that time Joonatan drew up in the air. This is result. It looks amazingly like a car. (amazingly so, that's what he wanted to draw) Anyway, it's a simple technique that can be a lot of fun with, especially when digital cameras provide shots for free.

However, I´m just amazed at what you can do with it when you put a couple of more thoughts and a lot more time to do it and practice hard). Here's a clip from Japan.