My mother has a 2017 Model S. She told me yesterday that while in a parking lot, the cars brakes were malfunctioning. She said it was a span of 5-10 secs, car was rolling forward under 5mph to park. When she pressed the brakes, nothing happened. The car just kept moving forward. She pressed it again and nothing. Finally she slammed her foot down hard and the car stopped, but by then the car scraped something. Has anyone else had this issue with the brakes? She's a bit freaked out. She was not pressing the accelerator as that would have caused a really bad crash. I told her to take it in, have tesla pull the log.