All participants build a long bridge road together. The road is attached to wooden sticks at different heights and must not touch the ground. Cardboard is used as the building material. 

The construction should be as stable as possible but also creative. Each section of road can be made more challenging with additional tasks, e.g. by adding tunnels, bends, jumps, etc.

At the end, the various road sections are assembled into a large circuit.

The self-built construction must also fulfil a requirement: A remote-controlled car should be able to drive along the entire bridge road without leaving the road. The car is controlled by the participants in turn.