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 15w40, and for real getter's, 10w30 (for that extra power
)...
Come on, use your eyes, ears, and other senses to determine YOUR likes in engine performance - it's YOUR car ...