The tech already exists. What matters is that the govt tries to force people into EV's and also tries to "help" set up charging stations. No entrepreneur is going to spent the cost to set up charging near his restaurant or store if he's worried that the Dims will make good on their promises and set up free charging everywhere. The end result is few people want an EV that's being forced onto them, and the free market is hamstrung from setting up charging stations in many areas. (Though I can attest that the eastern seaboard has plenty of fast chargers. We travel that a lot. So an EV is good for many of our long trips.)
Granted, an EV is not good for many situations. I wouldn't have gotten an EV as our new, traveling car if we took many road trips in areas that have poor charging options, or if we drove up north during the winter (or drove in the south on days like today LOL). There are times our gas pickup is the best option.
Also an EV is not worth it unless you can set up charging at home and drive at least 12K miles per year on home charged miles (for us it's 16K miles annually, not counting about 10K miles charged away from home). The gas savings in an EV is real, but only if you're one of the few who does lots of driving while staying close to home (home charged miles). And don't get an EV as an only car.
How much has you home charger added to your electric bill?............
Please check my math - you stated, “In August I drove 1,740 miles in 23.5 hours of driving and charging time.”
1740 MILES in 23.5 HOURS (1740/23.5) works out to an average of 74+ MPH. Not knowing how much charging time the 23.5 Hours represents, WHERE and HOW were you driving at speeds of close to 100 MPH for extended periods of time??
My guess is that this Korean Battery is still at TRL 3 or 4 at best. When it gets to TRL 7-9 then it may be something.