soccerchamp beat me to it. Ammonia is the solution. Go to an industrial cleaning supply outlet and buy the strongest ammonia they will sell. Get a couple of cheap plastic highwall trays. Place about 1/4 inch of ammonia in each one. Place one in the front seat and one in the back seat. Put your car in the sunshine with the windshield facing the most sun possible. Seal up the car totally. In about 2 to 4 hours later, come back, open up the car, get rid of the ammonia and literally just pull off the plastic film with your fingers. You will have to clean the glass with a good window cleaner. Heating the inside of the car up with the car heater does not help. The ammonia must sublimate from liquid to gas vapor and not be blown around by a heater fan. The ammonia vapor needs to just hang there and not move around very much.
An aside: If you spend big bucks having your windows tinted, never let carwash people use their cleaning rags inside on your windows. The carwashes seem to like ammonia based chemicals for several different cleaning jobs and their rags are usually contaminated. That is where those little bubbles in the tinting came from.
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