So far the exact opposite is happening, although you are correct that being the top selling car in the US won't happen, just the world as a whole. It's a pretty easy prediction, as even if it is wrong it will still barely trail Toyota for the top selling spot, barring some significant disruption and reversal.

They come #1 in Norway and their next best showing is #3 in China, but plenty of large markets where they're way down the list (e.g. #49 in Spain, #40 in germany did not make rankings in Italy, Brazil, India).

https://www.drive.com.au/news/the-best-selling-cars-around-t...

Italy historical top 3 is always cheap city cars. Usually Fiat Panda which costs ~15k€ nowadays (used to be much less).

A 50K€ base model car as top 1 is a pipe dream. It'll happen when people can't buy cars anymore and all remains is the rich and robotaxis.