You can run your own offline voice assistant. Willow is an example of this

Did you read the link about privacy pass? I’m guessing not since you think that your searches are somehow tracked with that.

Same

Kagi does a decent job.

I have a Hyundai ioniq 5 and it definitely has touch buttons for some of the things, like climate control.

If you care about utmost privacy, you probably want to use Kagi, then generate privacy tokens and move them to a different computer and search from there. It’s pretty much guaranteed privacy. https://help.kagi.com/kagi/privacy/privacy-pass.html

Kagi is also just the best search engine around at this point, at least that I’ve found. Worth paying for privacy in my opinion.