Yes, it does make sense and that's what often happens with snow in the South. The asphalt and concrete retains heat longer than the soil and grass, etc. Often the snow will fall and stick and accumulate on the open ground and grass, but the highways will appear clear because the warmer asphalt melts the snow for a time until the asphalt cools down to freezing.
At that point, the water from the melted snow on the highway freezes and forms a layer of ice. And there is a difference between packed, dry snow and a sheet of ice. That layer of ice remains and the new snow is stirred and packed on top the ice, but since there's usually only a few inches of snow, we just have a half-inch to an inch or mixed ice and packed snow on the road. - And then, at times, that mixture might partially melt and then refreeze into a thicker sheet of ice. And then it will all be gone, usually within one or two days. The roads are totally clear where I live now, and were around noon today.
Herman Cain or whoever described that is correct for many southern, problem snowstorms. And that's what happened this week, in front of my house and elsewhere.
Bingo, you’ve nailed it.
And I especially enjoy the criticism from Midwesterners, AKA Flatland. I drove on snowy roads in the Midwest a fair amount as a teenager and young man. It is a cakewalk compared to dealing with ice in the hilly terrain of Atlanta.