I also planned on storing my 2019 Flex Fuel build, that was until I drove it last winter. I will agree there aren't many cars out there more fun to drive during winter than these. As far as rust Noxudol makes an undercoating called 900D. This stuff is incredible if you apply it right and before the rust starts. You will need to remove all plastic shields, fender liners, wheels, and spray it through a raptor gun. Also cavity wax is great inside boxed sections and doors. If you coat absolutely everything the car will hold up near spotless for years and years. I personally have a couple of vehicles that have been treated like that for 7-8 years and they look better than a year old used vehicle. I live in Western New York where 100% salt is the answer to everything, so I know how hard it is on vehicles.