Let's call this new hack Christine. In 1983, Steven King released a novel of the same name, describing a vintage Plymouth Fury possessed by supernatural, murderous powers. The movie followed soon after. Three decades later and a vulnerability in General Motors' OnStar system allowed very non-supernatural hackers to take over cars from afar, locating the vehicle, unlocking it, and starting its ignition.
Thankfully, OnStar was not connected to a vehicle's steering, brakes, or transmission, meaning hackers couldn't use the security gap to rundown teenagers a la Christine. But the vulnerability, since fixed, certainly highlights the risks of week security in high-tech automobiles.