Slot car for kids (a working early beta)

First try to make a slot car. In our church is a slotcar track for the kids. We have a lot of brocken cars. I start to design a new car for the wheels and motors we have.

Watch this short slowmotion scene to see it in action (it is 8 times slower)
https://www.youtube.com/watch?v=JGKt7tCbtCE&feature=youtu.be