OnStar
OnStar Corporation is a subsidiary of General Motors that provides subscription-based telematics services, including communications, in-vehicle security, emergency services, turn-by-turn navigation, and remote diagnostics systems throughout the United States, Canada, Chile, China, Mexico, Europe, Brazil, Colombia, Argentina and the Gulf Cooperation Council countries. A similar service known as "Vauxhall/Opel OnStar" was available in western Europe and "ChevyStar" in Latin American markets (except in Brazil and Argentina).