bmw said tuesday that vw can use the rolls-royce name for free until dec. 31 , 2002 , but after that bmw will take the name away and create a new rolls-royce motor cars ltd. vw will keep the rolls-royce factory in crewe , england , but the company 's name will be changed to bentley motor cars ltd. and vw will produce bentleys , the other line of luxury cars now made by rolls-royce .