Harald Krueger takes over as CEO of BMW (BMWG.DE) after the group’s annual shareholders’ meeting on Wednesday, a job needing nerves of steel, or maybe carbon fiber given recent trends, as the company battles to keep its lead over Mercedes and Audi. Under outgoing chief executive Norbert Reithofer, BMW invested between 1.5 billion euros ($1.7 billion) and 2 billion to develop carbon-fiber electric and hybrid cars, according to analysts’ estimates.