Rogue here is kind of wide-eyed confused about the car wash facility, I mean who is to blame him. The poor thing has never seen an automated car washing system and a train of confusing thoughts must have been the day’s struggle.
He must be looking at the whole thing as a way to pet the cars. They are being cleaned in hot water and foamy soap just like Rogue’s owner cleans him. And the whole situation is furthermore perplexing, funny even, since he is sitting in a car while watching other cars get ruthlessly washed.