Editing Openai/6916559b-c940-800f-83b2-1ad7497951e9 (section)

==== 2. API surface & safety ====

===== CarPlay / Android Auto =====
* Apple/Google provide strongly limited templates: - special UIs for maps, media, messaging, - strict “no video while driving”, etc.
* Third-party apps talk to CarPlay/AA APIs on the phone. The car only sees: - “here is a compositor surface” - “here is a list of buttons”
* Safety model: - Apple/Google enforce what’s allowed while driving. - Tesla just enforces “if projection is active, do/don’t show X”.

So Tesla integrates a well-defined, narrow interface.

===== Native Android in the car =====
* Any APK could: - draw arbitrary things, - try to run in the background, - spam notifications, - do weird orientation/resize behavior.
* Tesla would have to invent: - their own “app in a moving vehicle” policy, - custom APIs so apps know when the car is driving vs parked, - mechanisms to kill / throttle apps that misbehave.

That’s a much bigger, fuzzier design problem.