HanSolo
That's because much of the US was settled after the automobile came into existence.
The car has determined the shape of our urban environment.
2 car attached garages, cul-de-sacs, strip malls on busy arterials with plenty of visible parking out front to encourage people to stop and shop, drive-thru fast food, and no real rich culture once you leave the old city centers (of the cities in this country that haven't disintegrated)
My thoughts are that in the United States after WWII there was such a rejection of anything European, our architecture here took on a major utilitarian brutalistic theme and became as boring and ugly as possible just to not look European.
Where I live now, for the past several years it seems the latest architectural phase is shed architecture. All the local municipalities here are building their civic buildings to look like large sheds.
And in the private sector, the same. It appears this is the epicenter of modern architecture and it's destroying the turn of the century Crafstmen style home neighborhoods with, you guessed it, shed architecture, and tacky vertical siding.
I see the ugliest home designs come through my office. It amazes me what people are thinking.