Im confused why everyone seems to think it's going to be indoors, when family level Mack Spinners have all been outside the past few years. Especially as the Eticket is a dark ride.
I did a bit of work on it a few weeks back but never posted, I could see it being themedsimilar to Raik. I would add equally the inside/outside stuff Mack does with Arthur could also work, theres plenty of space especially if the track was to go over the service road into the area of the unpermitted warehouse we're unsure of, heres the analysis