Close encounter

I almost got squished and made into a car sandwich today.

I was coming out of the supermarket and was walking back to my car in the parking lot. Keep in mind that this is a big parking lot so there's a lot of space to work with. I was walking on the right side and I saw that a car was backing out on the left side. I move in even closer to the right side, literally on top of the backs of all the cars. I notice that the car is backing out really far (much more than any human needs) so I decide to stop walking and wait for them to finish. By the time I realize it, a bit late, I see that the car is a few inches from crushing me between the cars! I quickly banged on their trunk and they stopped, while giving me the death glare. I was too freaked out to do or say anything but the woman behind me saw everything and quickly grilled their ass for me. I know I've been a bit out of it, alert me would've jumped back or something. I guess it was one of those "deer in headlights" moments when you see something coming but you can't do anything about it. Regardless, I still do not understand why someone would feel the need to back out that freaking much when they have all the room in the world.