I once got back on an out of town flight and had to have security drive me around the parking lot to find my car. :)
I wandered for a while, but finally found it. We are using a temporary parking lot and I'm totally disoriented at 4AM when I park. I usually park along the fence on our normal lot so that makes it easy. Today I worked a double shift and my brain was fried by 6PM. But I am on vacation next week (not a working one, I'm luckier than Dubya LOL), so I have time to recover.