even Polish cops now know that the car is with expired registration and can impound it.
What are the requirements to renew an authorization to drive on USA plates? I didn't know this is possible.
I have had many interactions with the police here while in my car from the USA and I have never once been asked to show any proof of registration. I just show them the USA car title document (proof of ownership, not registration) and my ID and driving license and that's it. I can't imagine them going through the hassle of calling the US to check if the registration is expired. Not only would the call have to be made in English and within US business hours, but they would also have to be familiar with the fact that in the US there are 50 completely separate offices for car registration and only the one in the correct state could provide them with the information they seek.