After learning how to install medicat i discovered ventoy. With ventoy you can copy and paste how ever many bootable iso files you like into it and run them all from the same drive/partition from a selectable boot menu. It’s amazing, I won’t be using dd anymore for boot disks.
I survived it for a few hours but ultimately succumbed to your issue exactly but with the added annoyance of having to get in and out of the car repeatedly. Not my game either…