I have a personal experience that can relate to this. I was cycling past this light truck, stopped by a vegetable field, one day. The old man in the truck opened the door on my side, and I went flying and landed on some leeks :-p. The ojii-san was terrified, and I was angry; luckily, I had only one shallow cut.
I guess there are times we can be careful, and there are other times that won't be enough. I hope automatic driving gets better and that can help the elderly.