There's some Swiss dudes claiming they're going to make the C**Truck road legal in the EU: https://werk-lab.ch/en/cybertruck . Although I'm not sure if it's just crowdsourced moneygrab or legit.

In any case the website says the steps "Familiarization with all legal requirements that apply in Switzerland and the EU for approval" and "Consultations with the Road Traffic Office and test centers to define the testing requirements".

I'm guessing the familiarization and consultation steps would've revealed to them that "Yeah, nah, this isn't going to happen..."