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" ... One concern by loved ones is that if the rider unexpectedly has a health issue, perhaps sudden heart palpations, there is no one else in the vehicle to assist (again, there isn’t a human driver). There are various proposed ways to deal with these predicaments. For example, the AI driving system might be monitoring the interior of the vehicle, using inward-facing cameras and microphones, and if the person yells out for help, the AI could immediately contact 911. The odds are too that most self-driving cars will also have an emergency button that can be pressed by a rider. ... "