I’ve found Zitadel to be the best open source Oauth2 provider. It also supports terraform for a fully IaC approach to declaring your users and their permissions.

Yeah. I definitely prefer Android Auto/CarPlay as a car agnostic interface for media and navigation over any built-in thing.

I’ve worked in this space in the past, and unless car manufacturers have significantly improved their UX chops this will go terribly. Further, this just seems like an opportunity for GM to further DLC’ify the car. Generally Android Auto and Car Play would be standard on even the lowest models, but now you might have to pay a monthly subscription to access this