I wish I could buy an electric motorcycle already, but they’re soo overpriced. Anyway, I expect them to become available at affordable prices within 10 years.
Loud engines aren’t a technological or engineering problem; they’re a self-esteem problem. Universal healthcare that includes mental health support and a strong working class economy will go a long way towards addressing those with low self-esteem, but they’ll never go away entirely.
Human’s have done some impressive things. We’re unravelling the mysteries of the universe and building some amazing tech. Yes, a powerful few of us have done some horrific things, to ourselves and to the creatures we share our home with, but I don’t think it was all for nothing if that’s what you’re getting at.