Funny enough my dad used to mention about 4*80 ac in the car for similar reasons, which makes me wonder if there where a lot of speeding tickets at the time.
According to my dad, bugs were the easiest cars to steal.
You could lower the window from the outside just by firmly pushing against it and down with both hands, then turn the ignition with a flathead screwdriver.
I got to 85 mph in mine once on a straightaway while on a long trip. It wouldn't go faster, but the engine gave it everything no questions. It also didn't feel all that safe, so I didn't do it again. Would I recommend a Beetle to anyone today, absolutely not. But I loved all four that I had in the past, and wouldn't have traded them if I didn't have to. A fun and needy death trap.
I hate to be that guy, but they're actually called vent glass/windows, even in modern vehicles where they don't open to ventilate. The quarter glass is in the rear of the vehicle on the quarter panel.
In the janky old vehicles I had back when that was a thing I would do stuff like smear some heavy grease on the edge to block the wind. Bottom dollar cars get bottom dollar fixes.