The underside of most, if not all 124's has a large undercladding - partly to help with sound, and partly to help with cooling, aerodynamics and a few other things, I'm sure. Likely the condensate is just building up somewhere on top of the cladding, and while you drive, is finely distributed back into the atmosphere. Perhaps the time that you did see a large puddle, is when the car it self was leaning at just the right angle to let the condensate collect and run out in just one spot.

That, or you live in Arizona, and don't have a lot of humidity - in which case I envy you.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D