8x4 - Top Gear

Chris Goffey highlights some of the pitfalls of buying a secondhand car and gives advice on how to avoid buying a 'pig in a poke'. From Japan, Judith Jackson discovers some of the new materials likely to be found in our cars in the future and Bob Friend reports on a development to assist the severely disabled driver. Wearing seat belts becomes compulsory in three months' time. Top Gear explains the new law.