I just stumbled upon this today, which fascinated me as I had no idea this project existed. I had heard Ricky Nierva mention that he worked on a film called Ray Gun on the Spline Cast. Apparently it was canceled, but I was interested so I Googled it. Turns out it’s a canceled Pixar project that was meant to be the studio’s first 2D animated feature, directed by Brad Bird. There’s a bit about the plot here:
bcdb.com/cartoon/67514-Ray_Gun.html
I guess it’s not gonna get made, but I would’ve loved to see more about it.