“Your phone died, you’re gonna get in the car, plug it in, and there’s going to be this nice convenient USB port for you. When you plug it into this USB port, it’s going to charge your phone, absolutely. And as soon as it powers up, it’s going to start sucking all your data down into the car.” That used to be just something seen in hostile devices. Now it's standard equipment.
You can get a USB Condom [1] for this purpose. [1] - https://www.amazon.com/PortaPow-3rd-Gen-Data-Blocker/dp/B06X...
https://www.aliexpress.com/item/4001139641708.html
https://www.aliexpress.com/item/1005001524934944.html
A small plug stays with the device that moves about, the cables stay put with the charger, "mag-safe" for all the things ...