Alan when I was younger. same type of thing happened. I said hmm I'll just hook a hose to the hot water heater and melt all that ice! Needless to say our driveway could have been used for ice skating after I was done. I had no clue back then that hot water freezes faster than cold water LOL.
When I was a kid we had neighbors that had a pretty steep driveway. When it got real cold they would turn on the water hose and let it run down their driveway all night. The next morning all the kids would congregate at their house for hot chocolate and loads of fun sliding down that drive on anything we could get our hands on.