Almost every EV we're talking about here has at least 210 miles of range, some have substantially more.
Again, EVs don't lose much charge just because they're on - the power is drained by the motor making distance. In fact, an EV driven at slow speeds will have greater range than driven at 60 mph. And lastly, if you're in that situation you can set all of your regenerative options to maximum and add even more range.
So 210 miles at 10 to 15 mph is going take far less battery than a 210 mile trip at 60 mph. Range is calculated and displayed based on usual driving conditions, so an EV with a 210 mile range would likely easily exceed that range if the whole trip is at low speed.
You're making a problem that doesn't really exist - and then accusing people of being ignorant to it? :shrug:
https://www.caranddriver.com/shopping-advice/a32603216/ev-range-explained/