If it would come to that, I would just not do it. It would be a peripheral activity anyway, if it's not afforded by my steering wheel or voice controls. So, yes, I would stop to navigate that. Not sure what that would be, in your car? In my car that might be something like planning the charging for the next night, or unexpectedly running out of battery and planning a detour? Very rare.
Depending on the road, you might have to wait 10+ minutes before there is anywhere to stop.
To stop for charging?
Stopping for food, say. You're on the road in unfamiliar territory, it's lunch time, you need to eat. What do?
Umm. Stop, eat, charge, visit the restroom… what exactly is the problem you envisioning?