Even back in the day it must have appeared to some bright people that an ordinary railway stays put indefinitely when you cut the power but a gyroscope monorail

Even back in the day it must have appeared to some bright people that an ordinary railway stays put indefinitely when you cut the power but a gyroscope monorail does not. This is btw different from hovering, levitating and wheel-based monorails which also do not suffer from catastrophic failure on power cut. There's one very successful monorail that looks like the gyrotrain but upside down, the Schwebebahn in Wuppertal; because it hangs down from the rail, it needs no gyroscopes just to barely exist as a functioning system. As for electric unicycles, well, personally I find them as undesirable as segways, but I segue.