It's a bird, it's a plane, nope, it's Liquid Robotic's four Wave Gliders on a mission to snag the Guinness World Record for longest distance traveled on Earth by an automaton. Setting out today from the San Francisco Bay, the autonomous sea-faring crafts will travel far and wide to gather data about the world's oceans. Powered by the water's movement, the vessels are fuel-free, using "flapping" wings to move forward without human command. Tricked out with various