They’re 2170 cells, actually. Much better density than the 18650’s. But yes - they’re still Lithium battery.
Why would 1000-1500kM (~600-1000 mi) be needed on a charge? Most gas vehicles go from 300-400 miles on a tank of fuel - right in the same range for my battery car. (325ish)
I’ve never driven 600-1000 miles without stopping. Ever.
And as for hydrogen .... no thanks. At the NYIAS, Toyota had their Mirai on display, along with a cutaway.
Seeing the COPVs needed, no thanks. One puncture or accident and we have a major problem.
Holidays for instance, you don't want to recharge every 300-400 Km, less recharging which is also better for the batteries.
As for COPV, I had no clue what that was, there are other safe ways to store hydrogen.
Maybe for you, but not for everyone. I need about 200-250 km out of one charge. For the past year, I've been driving an electric car to clients. Daily distance of about 150 km (93 mi). Works fine.
Plenty people need it, what about holidays, you don't want to stop each and every 300 Km for a couple of hours on a 2000 Km trip to Spain for instance.