In “The Grand Tour: One for the Road,” a one-off special representing the conclusion In their last adventure, Jeremy Clarkson, Richard Hammond and James May ignore the instructions of Mr Wilman and head to Zimbabwe in three cars they’ve always wanted to own, a Lancia Montecarlo, a Ford Capri 3-litre, and a Triumph Stag, for a stunning road trip through beautiful and sometimes challenging landscapes leading to an emotional ending on a strangely familiar island.