AGMs are actually worth the squeeze even on a car that doesn’t necessarily require one, they’re genuinely good-ass batteries. Expensive, though. But they’ll blow the pants off a lead acid in a stress test.
Also lots of cars have an option to toggle the auto-off. Not all of them though. And some will reset it every time you turn the car on and off.
To be fair, most of the CIA was on an awful lot of LSD around that time.