The EV Hummer is probably impossible to get registered as anything other than a truck, but there's some trickery you can do with regular pick-up trucks. I found at least one F-150 on sale that is registered as a van and you can drive it with a regular passenger car (B) license instead of a light truck (C1) license. Shockingly, the van F-150 isn't even prohibitely expensive in tax: just 531€ per year. Although with 1.70€ to 1.90€ per litre of 95E10, you'll probably just deposit all of your savings at the pump instead.
The F150 lightnings registered as a VAN can carry two passengers and about 250kg before going over it's registered and allowable weight limit. As a civilian those fines are hefty where I live, doing it as a company is extremely expensive.
It's a useless vehicle except maybe for towing. If you fill all seats with some hefty adults wou'll already cross the weight limit.