A link has been posted to your Facebook feed. BMW and the maker of Mercedes-Benz have reached a deal to collaborate on the development of self-driving car technology. The partnership between BMW and Daimler is a tectonic shift for the rival German luxury automakers, reflecting their need to collaborate on extremely expensive and challenging autonomous vehicle systems. The companies had already formed a joint venture to collaborate on "mobility services," such as car sharing and ride-hailing services. Taken together, these moves suggest that you could one day share a ride in a car jointly produced by two companies whose history of fierce competition is akin to the rivalry between American automakers Ford and General Motors.