It is a terrible hack, because one wipe of your wipers + fluid does the same. Alternatively, one move of the scraper does it faster than that bag. Maybe if th

It is a terrible hack, because one wipe of your wipers + fluid does the same. Alternatively, one move of the scraper does it faster than that bag. Maybe if the bag was on a stick... it would be faster. But regardless, the bag just leaves the now melted water there to refreeze! There are no hacks. We already know how to deal with these things, and the methods are effective, easy (for the problems presented).