Funnily enough, porn is sort of the canary in the coalmine for free speech. Their use of banning it will be through defining what is and is not obscene. If they can get a case run up to the supreme court, who then confirm that this self expression is obscene, that opens the flood gates for them to freely define what self expression is obscene and ban it or send people to jail.
From there it's a small step to calling something like a dissenting political opinion obscene.
Take a look at comma.ai and openpilot to see whether your car is compatible. I've put about 100k miles on my comma running on my Honda Civic. Then you get a working car that's not a deathtrap and improved self driving features.