Plot: A rare and valuable 80's Sierra Cosworth "whale tail" draws in a crowd of admiring fast Ford fans, but has the owner pitched the reserve too high? Also, Derek reluctantly decides to sell some of his own classic car collection to make space in the showroom before visiting Britain's biggest one day motorcycle event. And a restorer delights buyers with his immaculate 1966 Sunbeam Rapier and Sarah takes a shine to a quirky micro-caravan