keywords: bmw royce kalbfell heinz berlin
text: Rolls-Royce Boss Steps Down After 5 Months BERLIN - Germany #39;s BMW AG said Monday the head of its ultra-luxury Rolls-Royce car brand, Karl-Heinz Kalbfell, has resigned to take up  quot;new responsibilities quot; outside the company, which has been struggling to meet its sales targets for the superluxury brand 