Given the small surface area of the roofs, the efficiency of existing solar panels, and how much car companies exaggerate when it comes to miles (do they mean 2

Given the small surface area of the roofs, the efficiency of existing solar panels, and how much car companies exaggerate when it comes to miles (do they mean 27.7mi with all the seats removed, etc.) I would expect it to be a practical no-go for anything except sunshine. I'm from michigan, so in the winter assuming you park your car in the open for your job, you can easily expect it to be covered in snow - whenever it snows - which is all winter. So it'd only be beneficial here during the summer, except when it's raining which is currently 3/7 days of the week. I mean it'd be a nice bonus I guess, but at least for my situation it wouldn't make a ton of sense to spend extra on.