@Calvin77 - Melting is better than burning and it might prevent more house fires that way. Plastic is in practically everything around the house. Garbage cans, travel mugs, phones, socks, power cords -- it'd be great if they all could withstand heat better.
The plastic in car interiors is another type of plastic that needs a very high melt strength. Think of places like California and Texas, where is gets above 100 degrees outside. Imagine how the dash of your car has to hold up when all the windows are increasing the interior temperature. It's amazing how the inside of your car doesn't melt into a pile of goo.