+1, the outdoor Carcoon type are good but a bit of a paint to erect.
Have you seen the Machine Mart temporary garages? Worth a look if you have the room for one.
Alas no room I have to park in a lay by next to my cottage on a road, halfway up a montain road that gets very stormy in winter. I'm looking for a barn to store the car in but looking doubtful. I have a 'specialized' make car cover. But it's not up to much. I shall need a multilayer heavy duty cover
