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Andy Greenberg was cruising at 70 mph (113 kph) when the connected car he was driving suddenly began blasting frigid air, hip hop music and wiper fluid. He wasn’t even touching any of the controls — but he was being hacked. “As the two hackers remotely toyed with the air-conditioning, radio and windshield wipers, I mentally congratulated myself on my courage under pressure,” Greenberg stated last week on WIRED.com. “That’s when they cut the transmission.” Connecting cars, medical....