Video of the Week... How to spot a classic car, before it's a classic

How do some collectors always appear to be the lucky ones, buying an item just before it "goes big"? More than likely good fortune won't have much to do with it - it's reading the movement of the market and understanding what makes a commodity hot property that's the key.

And when it comes to picking out the classic cars of the future, a mixture of rarity and on-road performance are vital factors, as Top Gear's Richard Hammond explains.