I'll look into the cables, that sounds like a solution. I'm actually in favor of keeping the car in the garage if we possibly can. We've had several hail storms in the last couple weeks. It's an old car, so we don't care about cosmetics, but hail can do more than cosmetic damage, if it gets big enough.

The shed doesn't have power, so no dehumidifier in there. I had this idea that there's some sort of rocks or something that soak up moisture and change color, and then you bake them and reuse them. But I can't find anything like that online. Did I make that up or does it exist, anyone know?

The garage is tiny in ALL dimensions so hanging the bike from the ceiling isn't an option. Besides, my bike is super heavy with that enormous basket and all my tools etc!

I'm definitely having second thoughts about getting a road bike (in addition to my commuter). The shed barely holds our 3 bikes. Granted, DH hasn't ridden his bike in >2 years, and probably wouldn't care if we got rid of it, but I still cling to the forlorn and deluded notion that one day he'll ride it again!