We are still to this day getting new hoverboard news, it's time to organize the history of hoverboards to see if the technology for it has actually gone anywhere and speculate how far are we from a working hoverboard.
First thing I have to explain is hoverboards are over hyped, yes you heard me. You saw it in a cool movie, but be real, even if it would come out after using it 2-3 times you would get bored. Why aren't you skateboarding? Because you don't wanna add momentum to the board with your foot? No because it's risky to do tricks and it's boring not to. Same boils down to the hoverboard eventually, there are better alternatives to move around without your own strength than a hoverboard and they actually already exist.
Let't get the first fact out of the way, I have heard quite some people think BTTF II inventing the idea of a hoverboard, that is not true. It wasn't called Hoverboards back then, BTTF merely introduced(doubtful) and popularized the word Hoverboard, enough that Oxforddictionaries.com references the movie's concept to the name.
(Chiefly in science fiction) a means of transport resembling a skateboard that travels above the surface of the ground, ridden in a standing position.
If we look back in the history one if not the first Hoverboards ideas came from Hiller Aircraft company called "Flying Platform". They were big, clunky and not meant to be used for regular street travel. The idea itself was similar to the Hoverboard we know today, it was theorized that human's natural balancing reflexes could control the board.
In 2001 inventor Dean Kamen introduced us the product called "Segway" which for some time for speculated to be the hoverboard that we are looking for. With first mock ups for the Segway we sadly learnt it's not true, Segway is close, but something else, we want to levitate not to ride it around on 2 wheels like some weird stand up bike.
In mean time no real technological advancements were made for the Hoverboard, instead we got multiple inventors trying a leaf blower method to levitate an object with a human, which of course didn't work, like it also wouldn't work in theory. One of the leaf blower Hoverboard ideas was also made for Mythbusters which brought us even more down by showing how it's not an effective method.
In 2011 French came out with multiple Hoverboards which first introduced magnetics to the technology. "Mag Surf" was the first project that introduced superconducting that we still see today in Hoverboard technology. "Mag Surf" used rails to move around, it was the first spark we saw towards the finished product. We knew they had to start with something and that something was rails at this point.
Hard skip to 2014 we all remember the hoax video created by FunnyorDie about the Hoverboard loaded with enough celebrities that made it hard to call hoax at first. Considering we knew the levitation technology was still a baby at that point, very few if anybody at all fell for the hoax, the video went viral fast with everyone sharing the idea full knowing it was faked.
Next big thing that shocked people out of nowhere was in 2015 a video posted by Lexus, informing that they have not forgotten the idea and their best engineers are working on the real deal, the real hoverboard we are all waiting for. With all the fake videos around have made people skeptical and with a good reason, in no time we learnt the truth yet again, it is not indeed the hoverboard we are looking for. Not only had pro skaters hard time controlling the product it had again be ridden on the rails, bigger rails this time, as big as a whole fake skatepark that was built for the video.
This brings us to this day with new ideas and mentions of Hoverboard coming from several different companies. Hoverboard idea with all the hype has come to a marketing fooling with companies throwing out the name as fast as they can to get on the marketing train, to gain some attention. Who is to blame? The consumers of course, the hype has consumed the product itself at this point.
People are getting more and more skeptical of the idea, meaning kickstarters are getting less money and companies are starting to get less attention for the products which won't work for years to come.
That brings us to the final question. When will the hoverboard we all want get made? Probably in the distant future, the hoverboard that existed in 2015 according to BTTF II will not exist for at least 10-20 years looking how the levitation technology is moving right now. It's not that people are not putting enough money or effort to create one, it's just that we literally don't have the means to levitate a grown adult or a young teenage person on a small board that perfectly moves against the air pressure and wind on any surface.