It's official Lego: http://lego.cuusoo.com/
Fans submit designs/models, there is a community voting period, and at the end of that period Lego reviews the projects with over 10000 votes. Lego determines if the project can be made as an official set. Sometimes licensing is prohibitive, or the model goes against Lego values. In any case, if the project is viable, Lego master builders take inspiration from the user model and make the "official" model. They do, after all, have to meet a certain price point and obtain licensing rights (hence calling it a "time machine" rather than a DeLorean).
That said, I think Lego did a very...unattactive...set design here. Though, the frame only windshield is a Lego company design technique used in many other official Lego models. Including the Ferrari and Lamborghini.