Way back in my youth, inventors and visionaries were what always caught my eye. Amphibious cars, highways of flying cars, robots, colonies on Mars, etc. As I grew older and began to understand the problems inherent in bringing a product to market, particularly when it would involve a significant amount of cultural and infrastructure change, it became apparent that a lot of great ideas died on the vine for practical reasons.
Every once in a while though you see an idea, a prototype in some cases, and you just wonder why it never overcame the obstacles and made it to the main stream.
Things like, this….