440
Ford Patents A Way To Bring Ads Inside Your Car
(insideevs.com)
This is a most excellent place for technology news and articles.
Feasible for a non-profit however
Don't you need working prototype to get a patent? Otherwise musk or bezos or another for-profit asshole could patent every known scifi gimmick, wait until someone actually invents it and then send him a bill...?
Google says no, you don't need one.