I don't think it's absurd at all.
Yes there might be people that need to drive across multiple states on a regular basis, but the number must be very small. The only time I would do it is if I was taking a vacation, in which case I may as well rent a car for that purpose.
Do you stay only at home on weekends?
Seriously, picture this typical scenario:
My girl and I are visiting the next state over (NYS in my case). We've gone about 1/2 of capacity.
She says, "Oh, there's a great museum/shop/restaurant, that I'd love to visit while we're in the area. It's only an hour away."
Me "Sure, let's go!"
You: "Oh, wait, I need to rent a car...."
Now, if batteries become interchangeable, with maybe 1-3 sizes, and could be swapped out in 10 or so minutes, that makes all electric more feasible for a large part of the population.
That, tho, is not on the near horizon.
As commuter cars only, electrics have got to come down in price, which they will, to make financial sense. Those are very limited-use vehicles.
If your electricity is generated by coal, you're not helping with pollution as much as you (might) think. There are now charts showing the affects of this.
I would advise anyone interested in high mileage, low pollution, to get a Prius. We now know how well they hold up over 10 yrs and 100k miles, i.e. as good as new.
Please note, i'm not trying to convince you - or anyone - to agree with me.
Early adopters are great....for the rest of us. More power to you. oh, sorry...