Just because society is moving in that direction it doesn't mean you have to follow if you don't want to.
We hardly have FOSS software for phones and PCs (even with linux/bsd tons of the firmware/bios stuff is still closed), so having it for cars is not going to happen anytime soon.
But that's besides the point, which is: why does your car need an AI?
A: press/turn a mechanical button, that you can see and feel (without looking)
B: talk to an AI, which runs on top of a zillion lines of code, is susceptible to spying, bugs, hacks, noise, errors in voice recognition, etc