This year the headliner on the Beetle has started to fall down. I think it's because of our heat here. I'm also posting this for ideas for my grandfather's Jeep too because it's doing the same thing this year. I was thinking of buying a can of spray adhesive and using a straw on it and poke it through the headliner and spraying some adhesive in there and then smoothing it out and applying it back up. Eventually they'll have to go to an upholstery shop but I was thinking of some ideas before it gets that bad. Any ideas?