Once a car that was never sold in the US turns 25, it can be imported for road use.

https://helpspanish.cbp.gov/s/article/Article-278?language=e...

They can imported before that for museum, collections, or racing-only use, of course.

But there’s nothing stopping manufacturing in China and selling those cars in the us. No super high tariffs either ranging from 2.5 to 25%. Lower than chinas that’s for sure.