From Beaming Power to UAVs, Space Elevators, and Someday, Earth: The LaserMotive Plan:

LaserMotive robot for NASA's Power Beaming Challenge
LaserMotive robot for NASA’s Power Beaming Challenge

Pictured: Dave Bashford (foreground), Steve Burrows (background), and “Otis” the climbing robot powered by laser and solar cells. Inset: Otis in action at the 2009 NASA competition in California.