When I saw the headline about a bus that runs on “poo”, I was sure that it must be a joke. As it turns out, the poo bus is not a joke and is now shuttling people back and forth from Bristol Airport to Bath City Center. Once one gets past the word “poo”, then the technology speaks for itself…

I guess a few of us are old enough to remember the 1989 film, “Back to the Future Part II,” where Doc Brown takes Marty McFly to the year 2015 so that he can prevent his kids from making terrible mistakes. The world in 2015 in this film is full of flying cars, robots, and the famous hover board.…