Cars are personal. We buy them because we like them (mostly). We like the looks, the feel, the sound, what-ever...
Some of the stuff going down the road looks hideous
to me (Nissan Leaf, Juke, etc.), but some looks beautiful, and I'm sure is very nice (Bentley Coupe) - but that's just me.
Since a car (or truck) is personal, it gets what
I want to give it. It gets the gas I want to feed it, the tires I want, and the oil I want to run. It gets shifted when I decide to, etc.
Driverless cars will get what fleet manager wants based on bottom line and testing. If 0W-20 is best at overall return on value for the firm, that's what it'll get. I'm not a firm. I don't have a board (I do have a wife...) and I tune my stuff myself for the way I want it to run. That includes my choice of oil ...
I quit putting 20W-50 in high mileage vehicles a while back. I've now joined the thin oil crowd at 15W-40, and for real getter's, 10W-30 (for that extra power
)...
Come on, use your eyes, ears, and other senses to determine YOUR likes in engine performance - it's YOUR car ...