Underground is the sixth Circuit race in London. It starts on the road near River Thames and goes into the underground. You then have to follow the path until you have to get out and head to the finish line to finish the lap. The opponents include one Ford Mustang Fastback, one Mini Cooper Classic, one Cadillac Eldorado Touring Coupe and one New Mini Cooper (Amateur) or four Aston Martin DB7 Vantages (Professional). The time of day is evening, and the weather is cloudy.