The project contains software that acts as functional safety software in a vehicle, so ISO 26262 should apply. I couldn't find any reference to this in the repository or landing page?

Some sources mention it is for research only purposes (in closed roads?), others advertise this as a CES consumer product, has the project evolved along the way?

Each car manufacturer has to provide a battery of tests to regulators for each vehicle and sub-system within each vehicle. This project claims to be safe to use on more than 100 separate vehicles, perhaps I am missing something but this claim would require a considerable amount of evidence.

I am all for open-source and experimentation but in cases where we cannot provide guarantees, this should be done on a private road at your own risk.