>It would freeze and the only fix was turning off the car...a difficult solution on road trips.

Back in the days of manual transmissions, this wasn't so hard. I remember having to do this for some odd reason (don't remember) back in the 90s: just clutch in, turn off the ignition, restart the engine, clutch out.

On my most recent car which had an infotainment system, there was some kind of three-button combination you could press to reboot the system without restarting the car.