As I have gotten older, I more and more often find myself wandering around the parking lot, trying to find where I parked the car. And sometimes trying to remember which car I came in. Because I have a degree in psychology, and some teaching experience, I came up with a sure-fire method of remembering where I parked. Before I get out of my car, I say out loud where I have parked it, as if I were telling a friend where I have parked. For instance "I am parked in front of the Reitman's sign, about seven cars down the row." You must say it out loud, as tnat engages more than one area of your brain.
Remarkably, this system works pretty well. Any time I do this, I return to the parking lot and find my car in a few seconds.
Now, if only I could remember to do this every time, I'd have the problem licked.