The people inventing stuff like this think the problem they are solving is somehow important to making electric cars ready for the mainstream.
They seem to reach this conclusion because of course, electric cars need to be as convenient as gasoline powered cars, and those can be fueled up in about 5 minutes.
The thing is, most of the time, most people drive their cars less than ~75 miles a day, which is why the designers of electric cars have targeted a minimum range of ~75 miles. This means that most of the time, most electric cars need to be charged at most once a day. But the thing is, unlike gasoline vehicles, they can be refueled/charged while they are parked. The result is that for most owners, most of the time, 5 minute recharges of most electric cars are not a concern.
Ah, but sometimes people drive their gasoline cars hundreds of miles at a time! If they can't sometime drive their electric cars hundreds of miles at a time without recharging for an hour every hour or two, most people will never buy electric cars. Therefore, we need some way of recharging electric cars ~as quickly as we can refuel gas powered cars. That actually remains to be seen. It might be that people are willing to rent cars for long drives. It is also likely that in the longer run, the cost of batteries for electric cars could decline enough that most electric cars have ~300 miles range. Once you have 300 miles range, ~5 minute recharges are less important, even on long trips, because most people need a break for bathrooms, food, and stretching their legs every 4-5 hours. Already today, Teslas can charge to ~170 miles of range in 30 minutes at a "Supercharger" station.
Bottom line, the trends look like stuff like this is going to be a small niche in a mainstream electric car market, and as such, will likely never get the critical mass needed to be viable.
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