Overview: New car sales have reached record levels over the past few weeks and as a result the secondhand market is booming too. But as William Woollard finds out quite dramatically, buying a used car is still one of the biggest financial gambles anyone can ever take. In tonight's programme he visits Nottingham, one of Britain's busiest car sales areas to find out just how prospective buyers—'punters'—to the trade-can help themselves around the many pitfalls and problems of buying a used car. And Frank Page turns 'punter', trying out some of the secondhand models on offer.