Prince William impressed professional race drivers as he drove a pioneering electric SUV - though he was forced to laugh off bumping his head as he got out the car.
The Duke of Cambridge visited a racetrack in Fife, Scotland, to view motorsport company Extreme E's hydrogen fuel cell for charging cars using zero-emission energy.
He spoke to the developers of the technology, asking them not to go into too much detail, joking it would go over his head - which he bumped as he later got out of the car.
His public appearance comes after an extraordinary week for the embattled royal family, and just two days after his powerful statement in the wake of the Dyson report on the BBC's interview of his late mother, Prince Diana.
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