My 9-year-old Subaru has physical buttons. The car still ignores them when it's busy "thinking", like leaving the sound blasting at whatever volume setting it was on previously, but now with a different song, and there is nothing I can do to shut it the hell up for like a minute or two while it finishes booting up the OS.
Pro-Tip: "Physical buttons" don't have to mean a damn thing.:-(
Edit: I do like the tactile feel of them though.:-)