foretold -- >> we were fortunate enough to have a time machine in our movie that we were able to stretch the sequel form. >> reporter: yes, that stretch included a future with hoverboards and flying cars -- >> i need to borrow your -- hoverboard? >> reporter: hoverboards aren't exactly ubiquitous yet. this spoof from last year looked convincing. even featuring doc brown and tony hawk. but just a few weeks ago, this video came out of hawk riding a prototype of an actual hoverboard. 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. the massachusetts firm has been working on a model as well as i-tech which sells a flying do