An 85kWh battery may be more useful in every garage than this article claims. The added expense is claimed to "keep consumers away", but really it means things like solar panels become more useful.
If you are able to charge your car via power you generate and it can supply enough power back to run your home, you can get some huge benefits. You can have power at night that you generated during the day. No need to suck power from the grid. During outages, you would likely still have a few days of power. And finally, if we actually take full advantage of this, our power infrastructure could directly use these cars to distribute and store energy and route around outages, increasing stability in a huge way.
All in all, this could usher in an era of crowd-sourced power generation. One of the primary reasons that hasn't been feasible was the ephemerality of power on the grid. You consume it just after it's produced. We have no good way to store it. But with hundreds of thousands of 85kWh capacity batteries plugged into the grid, we suddenly have a start.
I think paying an extra $20,000+ for a car if that's a potential outcome is worth every penny.