Vehicle suddenly slammed on brakes on highway I90 in Chicago for NO apparent reason at 25mph. The car came to an immediate halt and if not for shoulder cars behind me would have stuck me. I am afraid to drive car. Dealership down plays faulty sensor, car has 2,000 miles. What assurance do I have to trust new sensor. System not redundant. I had no control of my vehicle and my life was at jeopardy. I will not trust.cat. Porsche is aware of issue for years yet nothing done to resolve. Phantom braking concerns litter the internet