A Cautionary Tale

I just finished a lovely swag bowl--the shellac had dried just enough to bring it back from the shop--and left it on the back seat of the car while I ran some errands. When I got home, I discovered that the shellac had blistered on one side. Near as I can figure, it must have been in the sun, since the rest of the bowl was fine. I'll rub it down and fix it up--shellac is very forgiving that way--but I never imagined that this could happen. Thought I'd pass this on, and maybe save some else some grief. And I'll post a picture AFTER it's fixed!