China was never going to export cars freely indeed. Automotive is protected pretty much everywhere. This is why large automakers have so many factories throughout the world. Such a practice wouldn't make sense without restrictions by the governments. What is going to happen is Chinese manufacturers will expand globally too.
And I agree about the nature of American tariffs too. They are of malice and China needs to react adequately. I don't think those "moral high ground" arguments hold any water. Nobody in the USA applauds China for being open.
Yes,I think the nature of US tariffs aim at Chinese products are different from other countries. Other countries's goal are to protect local industry,whereas the US goals are mainly aimed at hammering Chinese advantageous industries,even if they are not competing with any local US industry.