Could this robot cut traffic jams?

Click video. They're the bane of many people's lives, causing jams and misery for thousands of drivers everyday. But could a robot put an end to roadworks?

A new burrowing robot has been built to repair gas mains, which crucially means there's no need to dig up our roads. It's being tested in Britain to see if it can be rolled out across the country, as David Wood reports.

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