We have many small cities with nothing between them, very little intercity rail services, and an easy source of cheap second hand cars. I'm surprised we are first but I would have put money on top 10.
I'd say it's very similar in Poland. A lot of small cities and villages, barely connected by roads and with little to no rails. Public transport is good but only in big cities. In those smaller ones, you're lucky if there's more than on bus per line per hour.
This is my firsthand experience, as I'm from one of those. 15 years ago there was a bus every 15-20 minutes. Nowadays there's one per hour, sometimes less.
Even if you never traveled between cities the public transportation is dismal.
I'm honestly surprised that the US is in second, off the top of my head I only know one person that doesn't own a car but her boyfriend has one that they share.
Probably NY,NY dragging the USA down as usual. /s
Latest data usa is first. We're still second though, so not great
TIL that NZ has the highest car ownership in the world.
There's a few small tax havens that have worse per capita stats: https://en.m.wikipedia.org/w/index.php?title=List_of_countries_and_territories_by_motor_vehicles_per_capita
https://www.youtube.com/watch?v=9s8R81DBF0o&list=PLo-Yp_Um9P5OP-QYm30XJQ5YM7a_AyxNi