http://d.yimg.com/a/p/ap/20100824/ca...P5LUkErA72Ug--AP - A pair of fender-benders, two technology-loving hitchhikers and 22 hours blocked at the Russian border. That's the balance sheet so far for a team of driverless vehicles on a 13,000-kilometer (8,000-mile) roadtrip from Europe to China.
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