Garage humidity and surface rust

[chrisd0729]

My garage sometimes has condensation and/or moisture inside and I'm starting to see some surface rust on rotors, bare metal parts underneath, etc. I live in SE PA where the winters get pretty cold and we've had a ton of rain in the couple months. It's a 3 car attached garage with 2 of the walls adjoining the house and then other side wall and doors facing the outside. All 4 sides are insulated in the walls and the doors fit pretty well (with only a few spots where light may shine through the rubber molding.

Anyone have ideas on a heater, vent fan, dehumidifier, etc that could help cut down the humidity? We do use the garage as our main entrance as we pull in the driveway and come/go through one of the doors.

If no good option to keep the humidity out, what are thoughts on the blow up car capsule? I have 3 cars in here (Cobra, Viper, Corvette), 1 is in the end garage, the other 2 are stacked with a 4 post lift. Not sure how well the car capsule would work in the bay with the lift?

Thanks in advance,
Chris