Not to beat a dead horse, but the fastest charge speeds are from 0-50 or 0-60% state of charge. It is that figure that is 15-20 mins for current Teslas and $$$ EVs. My Bolt is super slow and is more like 30-40 minutes to do that.
Say you wanted to drive 320 miles....
If your EV has an EPA range of 250 miles, then it has a range of 200-210 miles at 65-70 mph.
Don't think you are driving it 160 miles (from 100% down to 20% SOC), charging it back to 100%, and then driving the second 160 miles to your destination. Bc charging from 20-100% (like filling up a tank) would take more than an hour, bc it will get really slow when topping off.
What you would do is drive 160 miles (100-20%), charge from 20-70% (15mins), drive another 80 miles, and charge a second time from 20-70% again (15 mins), and then drive the last 80 miles. And you get there (320 miles) with a total charge/stop time of 30 mins.
Above is the summer. In the winter, the HW range drops to 180 miles or so, and you need to make 3 stops (40-45 mins total). These stops might take a little longer, bc the charging might be slower in the winter.
Same trip in my Bolt would take over an hour charge time in the summer, with the same two stops, each lasting 30-35 mins. And easily 90+ mins total charge time in the winter.
As
@Ashful said, destination charging (L2 to 100% overnight) is super useful.
THIS is why you use an app to tell you when/where to stop. Just using gasoline intuition... you will take a long time.