Correct, not practical but will the specifications sell? 300 mile range and 200 miles in 10 minutes covers 99,9% of what customer need. What they want is a different story. Ever see a 4 wheel drive truck that never had anything in truck bed and never see snow or mud.
CATL offered a 900,000 mile 15 year battery warranty for a bus. Now that specification makes. Sense. Consumers fear the cost of battery replacement. EV companies should offer at least 250,000 mile battery warranty. That would boost sales profit way more than warranty costs.

Anyway perception is a major issue to winning the early majority.