Bold prediction: if they manage to produce a battery capable of 620 mile range promised, it will essentially be game over for ICE cars. My bet is that next generation of Model S and X will easily be in the 400-500 mile rsnge.
Every morning my car is full, because I plug it in in my garage. So if I don't go more than 260 miles that day, it's plugged in the next night. It doesn't matter that it takes a few hours. My gas car was just sitting in the garage each night anyway doing nothing. How many hours does your car sit idle per day? Probably way more than enough to charge it for your daily driving.
For road trips, there are super chargers.
I was a bit worried, after hearing all the fuss about range anxiety and all that. Overall, charging has just been such a non issue.
Honestly, electric cars are sitting in a cultural spot from where they can't lose. You can make all the arguments in the world that electric cars have the same or worse carbon footprint as gas cars, but the public at large is convinced that "gas = bad", "electric = solar = good".
Sadly I have to say that for me the range and charging is, in fact, an issue for me. The range is just a little too short to get to my holiday apartment so I have to drive to a supercharger which is not directly on my way. All this makes my travel about 1.5h longer than before. I for one would be very happy with a 200KWh battery in my Model S.
Even when you travel that should be enough for a full day driving, which means you will charge it at a hotel or whatever.
Only in rare occasions will the 30 minute fast-charging "inconvenience" you.
Once most EVs will have 100+ kWh batteries, the "slow charging" argument will die off. This is why I hope the 100 kWh battery becomes standard for 2021+ EVs, which should be cheaper than current 60 kWh batteries by that point.
Although I wouldn't discount most carmakers' laziness and greed for profits to keep the batteries a smaller size for as long as possible, unless Model 3 is refreshed with 100, 120, and 150 kWh battery options by 2021, which will force them to make the change, too.