Are there vehicles that support it in a way that isn't buggy? I have a few friends with it and I don't think I've been on a single ride with them without a glitch. Freezing interface, spontaneously jumping to regular Bluetooth, music playing but no actual volume, plugging into usb power causing some kind of mode-shift that makes the screen hang or briefly cease to work, all kinds of nonsense. Also kind of weirdly bad interface I feel (very subjective opinion there, obviously that's not a "fact").

I've only had Android Auto in my own vehicles, and while it hasn't been as buggy, it feels slow. I never use it anymore.

Same here. I have a Chevy that supports wireless CarPlay and I refuse to buy a car that doesn't have it. We're looking at replacing it soon, and we're going to go with a Subaru in no small part because it supports CarPlay.