And let's say we do make bathroom stops (kids or whatever); why should the needs of the car dictate when and for how long we stop?
When I was a kid my dad would threaten to leave us behind if we took over 10 minutes dragging out a bathroom stop. I don't see any reason to tolerate a car that takes twice that long to recharge.
On a recent trip I did pull over for a bathroom stop at a gas station. The prices were too high (understandable, only option for many miles) so I didn't buy any gas. In and out, no time lost.