Chalkbot

Insight

There's a tradition where fans of the Tour De France write messages of support in chalk on the road for the cyclists.

Idea

Use tech to allow fans from all over the world to write messages of support for cyclists.

Execution

Create robot that chalks messages on the road at the Tour De France.

Notes

Robotics/tech can feel tacked on. This has a real purpose and coulnd't really be done without it. Brilliant insight and expertly done.