I was driving with dd, roads were icy/ snow covered. We slid into the ditch, but did not hit anything on the way. It seemed like a smooth slid, my seatbelt didn't even lock up and dd slept through the whole thing. Just wanted to be sure, but my carseat should be ok right? it is a SS1 if that helps. I know graco says to replace after any crash, but we didn't crash in this instance.