Overview: Supermarket shopping in Britain takes on a new look this week when you'll be able to add saloon cars to your shopping list. William Woollard goes to London's Isle of Dogs to see an experiment started yesterday by one major supermarket chain to sell cars to its customers. Sue Baker road tests a convertible from Eastern Europe, the Skoda Rapide, and Frank Page reports on the concerned mum whose interest has led to a baby-seats-for-hire scheme which encourages young mothers to belt up their new babies from the moment they leave hospital.