Concrete-ice

I drive somewhere almost everyday. I don't mean I ride somewhere everyday, but that I actually drive my car. I would guess in the last year that's true of 360 days. Yesterday though, I did not drive anywhere. This is only important because when I woke up this morning and decided to go somewhere the icey snow stuff on my car was not just the regular it snowed a little last night consistency. It had hardened into something else. Apparently if you leave snow on your car for a couple days it changes it from snow to military grade concrete-ice. I think it happens because its on there, and then it warms up in the sun and melts a little bit but not really, then refreezes overnight. Did I mention thawing my car is one of my least favorite things to do? It took extra long today...Moral of this story; either don't live in Ohio, or go somewhere everyday when its cold and percipitaty out.