This image provided Tuesday, May 6, 2014, by the University of Michigan shows a concept design for the Mobility Transformation Facility, a 32-acre simulated urban environment planned for the school’s campus in Ann Arbor, Mich. General Motors, Ford and Toyota are joining the University of Michigan in establishing a testing site for driverless cars that will simulate a cityscape and will work with the school to help make such vehicles commercially viable. (AP Photo/University of Michigan)