All Alone But Together (2) - Now With Rainbow Road

So you may have seen the previous version here:  jimenopolix.deviantart.com/art…
While I like that version fine as it is, I had this other idea in mind to throw in an extra element...

You know what that big colorful stream in the night sky is? . . . If you haven't guessed... it's Rainbow Road! From the Mario Kart series!
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I always had this thought in Rosalina's Story that while they were exploring the cosmos, they came across a Rainbow Road in the sky. They don't know where it leads, but it must be an incredible journey. Not to mention I always imagined making a movie based on Rosalina's Story, and possibly including this Rainbow Road somewhere as a sort of icon, something meaningful for Rosalina's journey.
And not only that, but it would be a build-up to an eventual Mario Kart movie, where Rosalina takes the Rainbow Road, modifies it, and it turns into a beautiful and amazing race track across space.

And here's a nice song made by a YouTuber that I think could fit this pic really well:
www.youtube.com/watch?v=cZ2o-8…
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Super Mario Galaxy, Rosalina and Luma, Rainbow Road, Mario Kart - © Nintendo.