Moisture in the car

I made a stupid mistake the other day: to blow the damp air out of the car, I turn on short distances or in the last half hour of a længeren ride always the heating up fully and the window I turn down a piece. now I forgot døsbaddel the other day to close the window. it was only a small split, but enough to discover a week of melted snow on my plastic tub floor covering®. since then everything has dried again, ho Today, however, I have observed that the car was in the sun all day long, but as soon as it disappeared, the windows were smashed. that happened with all the cars, but with me first and mostly especially strongly on the rear window. moreover, the suitcase room is quite damp, tool from “stainless steel” gets rust stains (!) and the toilet paper, with which I control the ølstand outside of fuel stations, is no longer chic to say it like that. aum? the matte I have already removed and dried from time to time, that almost does not help at all. the water drain hole on the right is covered with a wooden board in a distance, on a level floor, so to speak, without affecting its function. the other side cannot be covered, because the spare wheel is standing. in general: does it make sense to heat strongly to remove moisture? or is the only wasted energy? does that actually make itself felt in the consumption – have e næmlich never more consumption because of heating measured, on same distances (is it so only abwærme!?). dear gruss oli, always interested in elementary knowledge…