Interiors and clearcoats fare the worst. Dashes crack, plastics dry out and disintegrate. Seats dry out and split. Carpets get very dusty/dirty. The clearcoats either peel or oxidize. There was a terrible hail storm a year and a half ago, a LOT of vehicles are damaged from that. Just be careful.
Remember about seals, that the vehicles heat up a lot more than the ambient air ever will, so it doesn't really hurt the mechanical stuff too much.
Remember about seals, that the vehicles heat up a lot more than the ambient air ever will, so it doesn't really hurt the mechanical stuff too much.