I’m more thinking about how I’d have to go out of my way to hook this thing up and make it work on a fridge. It’s not like that just came with the fridge, or that wires are easily accessible for power and (presumably) switching it on and off when the door is closed. There’s some custom work here, and while I don’t think it’s a crazy amount of effort, it’s way more than I’m willing to go through for my personal favorite car company (Mazda).