Audi, Volkswagen's biggest profit maker, is critical for Volkswagen, as the auto giant seeks to absorb 22.6 billion euros in scandal damages. That burden comes on top of more than 10 billion euros in investment needed to shift strategy toward self-driving, electric vehicles. For its part, Audi set up a new subsidiary, dubbed Autonomous Intelligent Driving GmbH, to develop robot cars and plans three battery-powered cars by 2020.