Dumb Fight at the O.K. Coral

The Grand Tour travelling tent arrives in Nashville, Tennessee from where Jeremy Clarkson, Richard Hammond and James May introduce their attempt to save the world's coral reefs using only a selection of car body shells and some extremely inept boat driving. Also in this show, Jeremy finally indulges his series-long Alfa Romeo obsession with a test of the new, 500 horsepower Giulia Quadrifoglio and AC/DC singer Brian Johnson comes to the tent to try his hand at Celebrity Brain Crash.