Vetting Automotive Grade Linux

This looks more like open source than free software, but as long as the source is available couldn't a free software version ultimately be created?

https://www.automotivelinux.org/

This also begs the question, 'What, if anything, do people do about the software in their cars?'. In my case I know my car has bluetooth and a rather elaborate set of digital gimmicks. There is no independent wifi capability...as far as I know. So if I keep the bluetooth off, I'd like to believe I'm relatively OK.

Is it too much to wish for cars with free software if we still don't have cell phones with free software? Maybe we can work on both.