1985 -- >> we're going beyond the road. >> reporter: and its sequel "back to the future part 2" foretold. >> we were fortunate enough to have a time machine in our movie that we were able to stretch the sequel forward. >> reporter: yes, that scratch included a future with hover boards and flying cars. >> i need to borrow your hover board. >> reporter: now hover boards aren't ubiquitous. this looked convincing. it even featured doc brown and legendary skateboarder tony hawk. just a few weeks ago this video popped up of hawk riding a prototype of an actual hover board. how about those flying cars? cars these days are still a ground-based technology but there is something of a tech race going on to create the first flying car.