Re: 50 miles???
So if your car had broken down or stolen, what would have happened? Say you were away from home on a weekend away?
In your scenario there's an emergency, where your battery was completely flat so you couldn't visit a public fast charger to top it up in a few minutes, and you didn't have a second car (or that was also completely flat) and there was no possibility of taking a taxi, or ringing a friend or relative, or ...
Seems just as likely that you'd be away for the weekend. I know I would be if my kids weren't at hoe.