Nike and Lance Armstrong's Livestrong organization teamed with some nerdier entities to build Chalkbot, a device that will be towed by a truck following the cyclists at the Tour de France, schpritzing messages of hope or mourning into the sidewalk for potentially millions to see. Anyone can do it--just visit the Nike link below. It's definitely a great way to inspire people, and bring awareness to the cause of Livestrong. But when I see "Chalkbot," I want something big, that propels itself on its own wheels or spindly spider-like legs, that's holding two really big pieces of chalk in its shiny metallic hands, making crazy shrieky noises as it flops around, jaggily scratching messages into the sidewalk in the old-school way. Or is that just the plot of my recurring nightmare? [Nike/Livestrong via CrunchGear]