https://www.bbc.com/news/uk-scotland-glasgow-west-45068703

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

On one episode of The Grand Tour they went into this crash. It seems that the boat hit a big wave, the front came up and the resistance of the air made it flip. Then it sank.

This was all done during the bit where they attempted to break the English speed record for amphibious vehicles.

Which (spoiler alert) Clarkson managed to do.