Paint Bubbles :(

[mk2 matt]

never cover a car, paint lives it needs air. if you cover it it sweats which can cause micro blisters as well as other problems

most damp comes up through the floor. get an old carpet and park your car on that, it will act as a barrier attracting  the moisture before it destroys your car

[RossMK2]

yeah never covering it again, garage it wet and damp at the best of times so realised now that its making it a lot worse