The enhanced autopilot failed to recognize a divider/Jersey barrier or alert the driver of the obstacle, as the software is advertised and was relied on to do, at an exit ramp and ran into the barrier without any type of maneuver or breaking to avoid the collision causing substantial injury to the driver. This exit is a very busy exit on I-95 with many commuters going to work at this time. It was by sheer luck that no other vehicles were involved. The driver endured an immediate stop from above 50mph to 0 in about a second. As far as I know, no inspection was performed. There were no warning messages, symptoms or problems related prior to the incident.