Mini-z PVC DIY race track

We needed(!) a mini-z track at work to satisfy our need of racing every week and the real track is too far away, so we made our own.
We had som carpet lying around and just bought some 16mm PVC-pipe for electrical installation and printed the corners and connections that we needed.

The first version you find in the picture. It was to technical but still very fun.
We tried to use some 3M dual lock to get the pipes to stick to the surface.
It worked but not so good when banging into the wall