The original animation I released on Wednesday 21st October 2015 (the day Marty McFly arrived in Back to the Future), was an isometric render (below). I later released the above animation to further show off the amount of detail that went into the models, and ended up liking it more than the original.
I made this satisfying looping gif animation so you can watch my factory build Hoverboards for the rest of eternity.
…and a few untextured renders of the machines (click to enlarge)
Finally, due to the carefully chosen time I released the animation, and the relevant cult content of it, it was picked up by numerous sites, and in a way, ended up going viral. Every time I saw an article about it, I screen captured it (click to enlarge).