Vehicle had a very loud high pitch whining noise the rapid accelerated I was braking and brakes were not working vehicle screen was flashing Vehicle Malfunction. yes vehicle is available. I could not stop the vehicle I struck three signs and a lady fell down as i was approaching the the building very fast, hit a wrought iron black fence and it fell on a park vehicle and then i hit a park vehicle and it stop i threw it in park. i am not sure. Insurance company After the vehicle accelerated there was a message saying VEHICLE MALFUNCTION, not before the accident.