For Gods sake shesells get a grip!!
You sound like somebody from the health and safety board.
All we are discussing is how to get rid of ice off a car windscreen!!!
I actually gave out to a woman the other week who was pouring water all over her windows...water was going all over the path and clearly going to freeze on those same paths and be a lethal hazard to pedestrians.
Just a warning about Air Conditioning - My Sister in Law managed to crack her windscreen by blasting the Aircon on full blast when getting into a freezing car. So same rules apply - dont apply heat too fast!
Its already been said in this thread but theres no need for chemicals or scraping or leaving the engine on. You don't even have to use hot water, just pour luke-warm water over the ice until its gone and then turn the wipers on to get rid of the water. No water on the windscreen, no ice. Takes about 15 seconds and your windscreen is clear.
I use a couple of jugs of water myself however I keep a 3 iron in the boot of the car in case any of the neighbours have an issue with this..
I'm in Ireland for the holidays, and one thing I notice, leave your windscreen wipers up off the windscreen, it's something we do all the time in the US, is stops them getting packed with ice and snow, and makes scraping easier.
Bit of an old thread browtal? On xmas eve I went out to clear mine and it was -11 with about 3" of frozen snow with a rockhard layer of about 1" ice at the bottom. A credit card wouldn't do much for that.