Today many of Britain's carfactorytowns have to face the fact that their days of producing cars are numbered. Sarfraz Mansoor tells the story of the motortowns through more than 70 years of archive and local oral history recordings. He also looks at the changing fortunes of Luton, Longbridge, Cowley, and Halewood, and Dagenham, where in 1929 Henry Ford sited the largest car factory in Europe. Producer Sara Parker