EMBARGO EXPIRES 12:01 AM EST WEDNESDAY, SEPT. 15, 2010
An OnStar engineer demonstrates OnStar MyLink for mobile phone applications Wednesday, September 8, 2010 in Detroit, Michigan. Chevrolet, Buick, GMC and Cadillac mobile apps powered by OnStar will allow owners to remotely activate all functions available on a traditional key fob, including remote start, horn and lights and door unlocks securely from select smartphones. (Photo by Steve Fecht for OnStar)