With demand exceeding supply, the market has been generally buoyant over the past few years – it’s why we’ve seen $100,000 Edsels. But if those sums seem eye-watering, at the top end of the market it’s another world, with millions of euros, dollars or pounds changing hands to secure the most historically significant machines. These are the most expensive cars to ever be sold at auction. Suddenly those old Fords seem like a bargain... We'll start at $11 million (£8 million), and work our way up: