A group of self-driving Uber vehicles at Uber's Advanced Technologies Centre in Pittsburgh. U.S. Photo: Gene J. Puskar/AP

Uber: the biggest challenge for our self-driving cars is finding cities to test them in

‘We need real road miles to make the thing work,’ says senior vice president

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A group of self-driving Uber vehicles at Uber's Advanced Technologies Centre in Pittsburgh. U.S. Photo: Gene J. Puskar/AP
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