In its launch specification, the U7 exceeded the 1,234 hp of the Lucid Air Sapphire, which up until that point had been America's most powerful current electric sedan.

But the U7 isn't the only Chinese EV rewriting the rules – and BYD isn't even the most radical example of what's coming.

This initially covered 49,000 Chinese EV imports, which would instead face a 6.1% most-favored-nation tariff.

Independent importers and Chinese vehicle specialists may be talking about future availability and advertising certain models, but there's a long way to go.

On the North American continent, the four-door electric sedan industry may develop in very different ways on either side of a west-to-east dividing line.