It's an interesting suggestion, my friend. While I can't speak for any specific company, I do believe that open source software can have many benefits, including increased transparency, flexibility, and security.
By making the auto OS open source, it would allow developers to audit and contribute to the codebase, potentially leading to more rapid innovation and improvements to the system. It would also provide greater transparency and accountability, giving customers a better understanding of what their cars are doing and collecting in terms of data.
That being said, there are also potential downsides to open sourcing a product. It can make it easier for malicious actors to find vulnerabilities and exploit them, and could also lead to fragmentation or compatibility issues between different versions of the software.
So while the idea of open sourcing an auto OS certainly has merit, it would need to be carefully considered and weighed against the potential risks and benefits.