A man who made a roller coaster that makes one turn in his garden

It seems to call a roller coaster overseas, but there are people who actually completed the course by hand. What is amazing is not only to run around, but to rotate really 360 degrees. Speed ​​has also appeared considerably, and although it is a one-person ride it is quite real.

Let's see the movie of that roller coaster. Playback is from the following.
YouTube - Homemade Roller Coaster

The name of this coaster is "The Blue Flash", which is 180 feet long (about 54 meters). It seems to have made quite a heartache and a smile when riding is impressive.