This is definitely an interesting take on the car analogy so thanks for posting it! I don't know that I agree 100% (I think I could 'settle' for a car that needed be be fueled once or twice a year if it came with some other noticeable benefits), but it is definitely worth remembering that sometimes an apparently small nudge in performance can enable big improvements. Miniaturization of electronics (including batteries and storage media) and continuing improvements to wireless broadband come to mind as the most obvious of these in the past decades.

I'm struggling to think of recent (or not-so-recent) software improvements that have had a similar impact though. It seems like many of the "big" algorithms and optimization techniques that underpin modern applications have been around for a long time, and there aren't a lot of solutions that are "just about" ready to make the jump from supercomputers to servers, servers to desktops, or desktops to mobile. I guess machine learning is a probably contender in this space, but I imagine that's still an active area of optimization and probably not what the author of the article had in mind. I'd love if someone could provide an example of recent consumer software that is only possible due to careful software optimization.