Japanese electrics that broke the King of Darkness's (Lucas's ) hold on lighting, PE Irving's little book "Tuning for Speed" , Honda 50cc Step through ( suddenly librarians, teachers, slightly risque aunts, sisters were driving a motorcycle ) WW 2 ( helped change metallurgy, you could cast Alloy easily), I could go on about the Japanese hiring, I think it was Degner and starting the Ding-Ding revolution, electric start etc.
Any how you get the idea.
Bill the demon.