Brake Light On problems of the 2017 Subaru Outback

The first of 4 incidents occurred on state highway 509 when traveling with my 12 year old granddaughter in the passenger seat. At the speed limit of 60 mph in the right lane, the parking brake applied itself without being touched. The car shuttered violently as it turned to the right heading for the shoulder and slowed the car to 35-40mph before I saw the brake light on the dash and was able to turn off the parking brake switch located on the center console. 2nd time going 35mph on a local street when the same thing happened without warning. 3rd time on the same highway as 1st incident but at 55mph and by myself. 4th time this happened was right after I picked up the car from the shop where they tried to repair the problem and were unable to fix it. I was on the freeway onramp to highway 509 starting to merge on a bridge when for no reason the brake applied itself. Again the dealer shop was unable to repair the car and I picked it up and took it to another Subaru dealer. The paperwork states that the car is not to be driven home or long distances. This Subaru Outback is a very severe safety risk if I keep on driving it.