We head to Boston, Mass. to hack a Buick Regal with CarKnow founder Josh Siegel. CarKnow is a tech startup that uses custom hardware and software to digitally duplicate your car in the cloud. Supporting MIT's CloudThink standard, CarKnow uses data generated by the vehicle to create various applications that allow for remote control of the car via a mobile device. Does all this vehicle data present a security threat for car owners?