The proper terminology for the rear window is ‘backlight’.

Cadillacs used to, IIRC. Some of them even had a sweet 5-note (simultaneously) blast.

Ludicrous mode.

Better be hard-mounted, otherwise it becomes a nasty projectile in a forward collision.

You too can have your very own Mk.I Supervan. Hot Wheels made a little one for about a buck. You can still find them on eBay albeit for more than $1.

Didn’t I read this morning that AutoPilot itself (the full suite of tech nologies) was not engaged?

I have one of each. Retro lives! Ha ha ha ha ha ha ha!