Thank you. It should not include what's on the car screen by default. People should be out there researching how to get a screenshot of the car screen using CarPlay not how to make it stop, let alone there not even being a way to actually make it stop. Seriously, who also wants a screenshot of what's on their car screen when they're literally using their iPhone to take a screenshot of what is only on the iPhone screen? Will there ever be a photo or anything of interest whatsoever on the car screen? No!
It also seems like the only people who have attempted (and utterly failed) to answer the question have never taken a screenshot on their iPhone in their car with CarPlay on, so they have no idea even what the problem is.
For those who might help, the issue is when you're sitting in your parking garage in your car, or in a parking lot, etcetera (in Hedwig voice), and you're, for instance, checking Instagram, and you take a few screenshots of pictures in Instagram, in your photo album for every screenshot of a photo from Instagram that you actually wanted, there will always ALSO be a screenshot of the useless, unimportant, and unwanted thing that was displayed on your car screen (such as a map image, the image of the music you were playing, etcetera (you know)). This is IN ADDITION to the only screenshot you actually wanted of each photo on Instagram. If you take ten screenshots of ten different Instagram photos, in addition to the ten, wanted Instagram photo screenshots, you will also have ten completely unwanted screenshots of, say, your map. That means instead of having ten (10) photos you wanted in your album, you now have twenty (20)!
That also means, in turn, for each and every screenshot you actually want, you will also have to spend the extra time to delete the unwanted extra screenshot of the useless thing that was on your car screen. No one wants this. No one. Why would we want ten extra screenshots of the same map image shown on the car screen over and over again? We do not want to disconnect our iPhones. We do not want to shut off the car in the summer when our air conditioning is running, or in the winter, when our heater is running.
If there is any way to disable this, um, feature, it should still be OFF by default.