See: Better Place
That framework was quickly discarded. Tesla tried it in California, too, and basically no one really used it.
GM is on the right track with Ultium. Adding 100 miles of range in 10min with a 350kw on-board charger is very impressive.
The biggest issue, as you bring up, KARNUT, is the infrastructure. It's just not there yet AT ALL nationwide. We have a Pacifica Hybrid and it's almost useless to consider charging it outside of our home right now. There are so few options.
By the time the Silverado EV hits the streets in 2024, I think DC charging stations will be more numerous, but I would not make a full EV truck my main method of transportation until later 2020's, IMO. It will easily take that long for the US to get build out a reliable network of fast-charging access points.