He may have boxed his way to a world title, but what about when pitted against an even more dangerous adversary? Yep, on this Sunday's show, we'll have none other than Anthony Joshua – the reigning IBF heavyweight champion of the world – as a star in our rallycross Mini. His opponent? American comedian and film star Kevin Hart. Joshua is 6ft 6in. Hart is, um, not. Top Gear caught up with the pair
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