Do you really find you can reliably sustain your full attention that long?

My EV can do 3 – 5 hours on the motorway between charges (depending on weather conditions and speed), but to avoid fatigue I always want a break within 3 hours or so.

And by the time I've parked, gone inside, queued up for and drunk a tea or coffee, used the facilities, and checked the next leg of my trip, that's half an hour and the car is ready to go again.