Mike takes the ultimate plunge and invests in a car - and a boat, all in one. It’s the Amphicar, an amphibious vehicle that Edd has been dreaming of for years. But when he peels back the layers and discovers the car’s problems are serious, will he find himself in deep water and rinse away all the profit? This challenge truly puts Mike and Edd’s skills to the test and could see them literally sink or swim!