I doubt we ever see those for non commercial vehicles, I can see semi's needing them but what people are not getting is that the number of DC fast chargers for regular cars isn't going to be that great, most will be fully charged at home overnight so the idea of a "gas station" is a thing of the past. What we will see is a ton of 20 kw level 2's at destinations places like sports stadiums were people might drive 200 miles to go to.