In he 1900's people predicted that by now we would have hovercrafts and robots.... Well, at least we have some pretty cool cell phones! amirite?

Um, we do have hovercrafts and robots.

DROiD.

they also predicted we wouldn't need trees 0.o

We do have hovercrafts and robots. Though, they are mainly used in the military and for intelligence-gaining purposes.

Internet > Hovercraft