Its been a few years since we last checked in on NASA's All Terrain Hex Limbed Extra Terrestrial Explorer rover -- aka, Athlete. Now a half-scale working prototype standing 15 feet tall, weighing 2.5 tons (about 2,300 kg), and capable of a 1.25 mph (2 kmph) top speed has been set loose for testing by its Jet Propulsion Laboratory creators. Its first task, set to begin next month in Arizona, will be to complete a test circuit of at least 25 miles (about 40 km) in two weeks under its own power. Failing that, we hear Woz is looking for a