The Live Strong chalkbot is a fantastic thing. It's such a good idea that I thought it was a viral hoax, and even as I'm writing this I'm half convinced that I'll be denounced as a gullible fool. But the folks in the video are so earnest, and the chalkbot itself looks like such a Heath-Robinson contrivance that I can't believe it isn't for real.

Go online or text your message, and the chalkbot will trundle round the roads of France printing your words of wisdom in chalk onto the pristine Tour tarmac. Best read the rules about what you can say first though...  1

Dave is a founding father of road.cc and responsible for kicking the server when it breaks. In a previous life he was a graphic designer but he's also a three-time Mountain Bike Bog Snorkelling world champion, and remains unbeaten through the bog. Dave rides all sorts of bikes but tends to prefer metal ones. He's getting old is why.