BOZEMAN, Mont. (AP) - A traveling exhibit of 41 full-sized machines based on sketches by Leonardo da Vinci opens later this month at the Museum of the Rockies in Bozeman. In addition to painting the Mona Lisa, da Vinci sketched out plans for pedal-powered flying machines, a war tank, a water-powered sawmill, a wooden bicycle, a parachute and even a gear-powdered robot.