I was drving out of a parking lot, and I had to stop to avoid hitting a woman who seemed to be trimming the grass or the bushes near where the driveway connected to the road. (I had never seen her before) When I got around her there was a car in the way and also a man on a bike, I think. I did manage to avoid them all and go off down the road.

Later the same day, I was coming out of the same parking lot towards the same road and there was the same woman, and I had to stop as I had the first time. But this time my car slipped backwards when I applied the brake, and it continued to slip backwards as I awoke. What does it mean?

are you new to driving or maybe you feel like stuff is slipping out of your control

No, I am not new to driving, but yes maybe I do sometimes feel things are
spinning out of control. Thanks for helping.