1.   Use vinyl seam adhesive where vinyls overlap.

2.   In many cases you can paste the loose seams back down by using one of the tubes of vinyl adhesive sold in most hardware stores for just this purpose.

3.   Instead paste the loosened sections back down with a vinyl adhesive that is sold for this purpose in all paint stores.

4.   The cars are wrapped in a vinyl adhesive that is guaranteed not to damage the paint when removed.

5.   Try pasting the loosened areas back with a vinyl adhesive sold for use in hanging vinyl wallcoverings.