The presenters then travel to Barbados to solve the problem of dying corals by dumping five car body shells into the ocean. The first attempt is disastrous, as they lose two cars and the boat they were attempting to load them on to. Because they had sunk the cars in the harbour used by cruise ships, they are asked to leave by the authorities.
Constructing a raft and hiring a crane boat, they manage to drop two cars into the reef site, and May is assigned to anchor them down while Clarkson and Richard Hammond go jet skiing. When they discover that May was unable to anchor the cars down, Clarkson dives in and welds them to the sea bed.
Back in the tent, the presenters introduce Celebrity Brain Crash with former AC/DC vocalist Brian Johnson. On the way to the tent, he is tackled and trampled to death by football players. This leads to the presenters and the audience having a bit of a disagreement about the meaning of the word "football".
Back in Barbados, the presenters discover that the cars have washed back into the beach. In their attempt to get the cars back into the sea, their raft is disintegrated. After May unsuccessfully uses a bulldozer to pull the cars back to the harbour, Clarkson uses their crane boat to pull them back into the ocean before they are kicked out of the hotel premises. The next morning, they pull a Land Rover into the ocean before Clarkson ditches his partners to chase an MOD70-class trimaran. They eventually reach the reef site and sink the Land Rover.