We've reached that point here in SE MN where we have gotten the right combination of snow, freezing rain and cold that the snow on the ground has frozen over. If you are light enough you can actually walk on top of it, which makes for great sledding on the hill in our backyard. Will had a friend from the neighborhood over this afternoon and they were taking turns going down the hill. I wanted to get a video because they were going so fast. Will's reaction at the end is priceless.