Dude its not worth the space (and maintenance, insurance, etc) of an entire car for two deliveries a year, thats fuvking insane, get over yourself. And people can include rental/delivery in cost of the item or wherever. Or we can gave full communism and they just do it.
Plus, and I say this living in California; cargo bikes really do work fine most places. Even here (not all, but most) youre just being afraid of change, And it's cringe.
I'm sorry, but the earths carrying capacity does not have room for your pathological american bullshit.