The Daily News had this article on the chalk message campaign that has been launched by Nike and Lance Armstrong's Livestrong organization at the Tour de France and I had to find out more about it. The Chalkbot will paint personalized inspirational messages in yellow chalk along the route of the Tour, about 8 hours in front of the riders. To submit a message, text "LIVESTRONG", followed by your message to 36453. You can also enter a message from the official site, www.wearyellow.com. The two videos below explain what it is and how it works. Pretty cool.