The dry and warm air here is great for the longevity of steel and aluminum, bodies last forever but plastics and soft trim really takes a beating. My 08 Magnum has spent its life outdoors and a lot of the plastic on it is in terrible shape. I pulled the center dash bezel recently to upgrade the radio and the tabs that held the retainer clips were toast. I got a used bezel out of Ohio that was perfect. The chrome plated plastic strips on the interior door panels are separating and the plastic trim at the top of the door panels at the side glasses are all splitting apart. But no rust.