Wikipedia says Europe uses mainly the shorter cab-over-engine tractors in order to maximize trailer length while staying under the total length limit. They commonly pull standard ISO shipping containers, so in that case at least the difference is all in the tractor.
The stated mission of Tesla is to help transition the world to sustainable energy. Electric motors are much smaller than diesel, so I can't imagine a shorter cab design would be a big deal.
Europe needs an electrified semi and if I've read correctly, Tesla's semi is much more efficient than the others.
Freight volume especially for a heavier electric truck is very important, because it is already limited by freight mass. There are already electric trucks for example by MAN on the EU market and the response seems pretty good. Not so much hype as everything Tesla does, though.