JCB has unveiled what it claims is the construction industry's first hydrogen-powered digger.
The firm, which aims to lead the sector on zero and low carbon technologies, says the 20-tonne 220X excavator prototype has been undergoing "rigorous testing" in a quarry environment for more than a year.
The technology uses hydrogen to react with oxygen in a fuel cell, creating the power which runs the vehicle's electric motors - the only exhaust emission produced is water.
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