This technology already exists. GM already has this technology: GM Onstar. OnStar Corporation is a subsidiary of General Motors that provides subscription-base

This technology already exists. GM already has this technology: GM Onstar. OnStar Corporation is a subsidiary of General Motors that provides subscription-based communications, in-vehicle security, emergency services, hands-free calling, turn-by-turn navigation, and remote diagnostics systems throughout the United States, Canada, China, Mexico, Europe, Brazil, and Argentina