It won't be proprietary. It is SAE J3400. It is CCS. That's why other manufacturers are willing to support it. It's true that North America should have standar

It won't be proprietary. It is SAE J3400. It is CCS. That's why other manufacturers are willing to support it. It's true that North America should have standardized a plug and charging standard a long time ago so drivers aren't in a situation where they have to waste money on adapters just to charge their car. Europe has much better EV infrastructure today in part because manufacturers have been able to build to a common standard and have it work across all brands. That standardization has driven investment, development, and deployment.