Battery swap/pit stop.

Would it realy be nessesary to havea "quick" change battery system?
I can see how this would have been a good thing last year, but looking to the future I'm seeing theres not buch need for such a system. I meen when all Electrics start running together why would you need a quick change system
As most mains would likely be only 15-20 mins, which we can all ready do.

What do ya'll think?