Thank you. I'm probably not going to give you an angle you might want on this topic, because I'm inclined to think it was nothing of any significance. I think the extreme rain is the factor being overlooked.
Heavy rain. Super heavy. The driver goes across a big puddle or three in the road, or a truck flies by him and throws a wall of water at his car, and it either makes him slew sideways, or his brakes seem to have gotten wet/malfunction, or he has an electrical/battery malfunction of some sort after getting everything soaked by a puddle or a passing truck or something in the extremely heavy rain. Maybe headlights flicker or brakes are weird, or both.
If you've never been in that sort of situation, this probably sounds weird to you. But I have. Rain sloshing up into just the wrong place can make weird things happen to your car, and particularly relevant to what I see here is the sort of situation where the lights flicker or go off when you hit your brakes. It's like a system overload or short.
So I'd theorize that the car is acting weird, the driver sees an oasis off the road, a fully lighted parking lot, and turns in. Maybe he switches off lights, thinking he might have a battery issue - or maybe the system problems make the electrical system and lights flicker as he hits his brakes to pull in. Drives slowly. Goes slowly and seems okay. He also fiddles with lights as he turns corners or hits brakes - or maybe the lights themselves do it, rather than him, where they are flickering on and off as he hits brakes and turns corners. Makes a lap slowly, stomping on brakes here and there to see what he gets (yes, this is seen as well). Eventually decides that he will stop for a few and let things drip dry a bit, before resuming. Turns off lights, sits for 3 minutes, decides it seems better, and he cautiously exits and goes on his way.
That's what I see.