What are the requirements of vehicles that drive across the border, like if a Canadian family is holidaying in Buffalo?

If they're driving a BYD, do they get stopped at the border?

What if they sold their BYD to a US family? Can it be registered and insured? I'd guess not, therefore it wouldn't get bought by a US resident in the first place.

Border-crosser here: Many Canadian-model-only vehicles are driven in the US by tourists and the like - you can bring it in for up to the year temporarily.

https://www.cbp.gov/trade/basic-import-export/importing-car

> Nonresidents may import a vehicle duty-free for personal use up to (1) one year if the vehicle is imported in conjunction with the owner's arrival. Vehicles imported under this provision that do not conform to U.S. safety and emission standards must be exported within one year and may not be sold in the U.S. There is no exemption or extension of the export requirements.

To actually legally permanently import the vehicle, you have to go through the rest of the onerous CBP requirements, validate safety standards, etc, etc - and that's when it becomes a true screwball and it'll never happen. But yes, I guarantee you'll see some BYDs running up and down the Northeast, and very likely spot them around Florida as snowbirds drag them down with them still. I think I'm even more likely in my position to see a BYD with red Ontario diplomat plates, now that I think about it...

My favorite oddball I've seen the most of is the Chevy Orlando MPV. https://en.wikipedia.org/wiki/Chevrolet_Orlando