FastLED inside ? 
https://www.youtube.com/watch?v=mJevk3zJt64
No, it isn’t - but I’ve met the people who built that - cool folks 
The Sugar Cubes art car guys? Didn’t see them out on the playa this year, maybe this is why
I think it’s because they made their cubes into that giant tree thing?
That was a different group AFAIK—the modules used by Squares were designed by Mark Lottor, the Cubatron guy. I had a little chat to the Squares’ handlers in their little booth