"I have never been a big fan of the Technic pull backs. With that said, this is a very good use of that. The bugcatcher and flame elements have a loose fit. As this thing scoots across the floor those parts look the part. And the adjustable wheelie bar lets it go straight or pull a wheelstand off the line. Just a matter of how you set it. Very good set for a quick build, and a good use of the pull back motor system."