Yep. John and Frank like to unwind out in the garage resorting old classics.
I've known some people over the years who have been into restoring and building cars and bikes or have been involved with various amateur motor sports. Nothing about the hobby is cheap. Most of them who are into it have serious garages or trailers full of expensive gear, years upon years of experience, and a network of people around them who are also into the local scene who can lend out gear and help each other out. I don't see John being successful in such circles. It's not because he is trans, but because he and Frank are both such intolerable goons. You know that if John goes down this route, he is going to make Frank buy really high end gear (e.g. Snap-On tools etc) that John won't take care of and which will ultimately just collect dust as soon as John realizes the actual effort involved in what he claims to be into doing.
I, like many of you, find it amusing to see the ways in which John burns through Frank's money. We might soon be at a point where it's becoming unsustainable. John dumps a lot of coin into vidya, figurines, and Apple gear but all of those things are peanuts in comparison to this kind of stuff. The only other rich white guy hobbies that come to mind which are bigger money pits are sailing, aviation and horse breeding. Getting a pilot's licence requires actual effort so that's out. We all know John's history of taking care of animals, so I don't see the horse thing in the cards either. I think we should somehow plant the seed in his mind that he needs a boat to go with his Porsche.