In the Swinging Sixties Roger Moore cruised the streets of London as The Saint in his white Volvo P1800. Will the new C70 coupé turn heads in the nineties in the same way? Quentin Wilson visits America to find out. Plus, Jeremy Clarkson drives a limited edition Vauxhall Vectra, a £27,000 road-going version of the British Touring Car Championship model.