Plus if electric cars become the norm, the streets will be quiet for the first time since the industrial revolution

Probably not due to concern of both animals and those with impaired vision, but things seem to go back and forth on that front from time to time.

One of my answers was that most fuel is no longer leaded (apparently some prop plane fuel is?)

Computers are also so fast and we can access just about anything at any time. This compared to my childhood in the '80s where my dad was online (BBS and later CompuServe) and I would sometimes play around a bit when things were much slower and more sparse (and generally far more local). Obviously, this didn’t work out 100% in humanity’s favor, in hindsight.

I have a GoPro sitting next to me and a 4k camera in the form of my handheld computer (smartphone) all of which still kinda feels like the future a bit.

Translation services are also super cool and open up so much more for idea and cultural exchange as well as opening up travel so much more. Likewise with language study online and the preservation of endangered languages.