That’s why BMW is testing a 5-Series sedan outfitted with autonomous tech on that stretch of roadway. The German automaker wants to see if cars with the ability to sense their surroundings can make heavy traffic less of a chore for stressed-out drivers. Engineers from the Highly Automated Driving group have racked up more than 3,100 miles in a semi-autonomous car that can take over during a traffic jam and even bring the car to the shoulder if the driver becomes incapacitated.

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