HoverVan Havoc | Top Gear | Series 20 | BBC

Please be aware that Inhaling pure oxygen is potentially hazardous. Jeremy, Richard and James embark on a project to build a car that can turn into a hovercraft and bring relief to flooded areas of Britain. Their efforts don't start smoothly, but it's not long before the trio is demonstrating the brilliance of their creation with an eventful journey down the River Avon.

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