The Core

They are not wrong.  There will be a niche for ICE for 20 to 40 years IMHO.

>ban ICE's by 2030 - 2035

EV's: you can't compare Europe and N. America.  Europe distances are shorter and they already have a for real passenger train network.  N. America barely has a train network and much greater distances making EV's problematic in huge regions.

For example, I-64 in West Virginia has a section of 7% grade that is 7 miles long. Fine in a EV going downhill but going uphill is going to drain that battery like crazy.

No test data that I've seen.

It has some extremely rugged terrain, with one segment boasting a seven-percent grade downhill eastbound for seven miles (11 km) at Sandstone Mountain.

https://en.wikipedia.org/wiki/Interstate_64_in_West_Virginia

I've travelled that route 3 times decades ago.  Quite an eye opener for a flat lander from the Midwest.

First you see the warning signs, then you are looking down, then you hear banjo music.

An EV semi going downhill would produce some charge with regenerative breaking but mainly you have to rely on the gearbox.  Going up is no fun.  The grade might be slightly less but I remember all the 4 cylinder Chrysler K-cars struggling and the trucks chugging slowly in low gear.