MRI tubes don't bother me. The first time I went in one, I did not realize it would make racket like that. So I didn't like it, but didn't freak out. From then on it was okay. One time my nose itched while I was in there, so I know what you mean.
I have another story of someone nice, but I wasn't in a car incident.
The last time my mother was in the hospital, I did have some meals at the hospital cafeteria. It was adding up on my limited resources. So I told the guy I wanted a hamburger, and he was about to make it. He asked if I wanted fries, and I said well I would, but I can't afford it, so no fries. I got a water to go with the burger, and was checking out. I did not realize I had fries when I opened the container to show the checker what I had. I said no, I didn't order fries. The checker said don't worry it is paid for. I said what do you mean paid for? He told me my whole meal was paid for by that lady. Of course I had no idea what lady, and he pointed her out to me. She was standing right behind me in line, with a big smile on her face. I thanked her of course, and we had a little chat. So there are some good people left in this world. Sometimes it doesn't seem like there are, but you run across them now and then. It restores your faith in humanity, that is for sure.