On a “large car”, one still has metal body & west coast mirrors. The Sirio Perfotmer 3/8” (or Wilson 5000) may still be best (height restriction not quite favoring Predator 10k).
On a composite-body “company truck” where one can mount at mirror base or on arm, 7’ Skipshooter is the bees knees.
You definitely have expertise that I don’t. I have a little time behind the wheel of....ah, let’s leave this be for now...