It has a set spawn there, it's the only car that will spawn in that garage, but you can find it in other places around trevors place, i saw it by some people having a party next to a campfire.
All the garages by that spot are empty, bro.
You're getting butthurt at the wrong person. I've found at least 10 Rat-Loaders all around Sandy Shores, in that area. Drive around, stop being a pedantic cry baby, and you'll find one. Jesus.
That's not what i'm getting at. If it's not in a specific place, it's not a "confirmed spawn point". Sandy Shores is the most likely spawn point but i'm not seeing anything that points to a 100%, always-there Rat Loader. I didn't need someone to tell me that a stripped down hot-rod pickup most likely spawns in Sandy Shore, I could figure that out.
Which, as I said, makes this thread's title highly misleading.