The Sleigh on a Treadmill question

I think this is just lumberjim's way of hinting that he wants a home treadmill for Christmas; but, to dispel the myth that reindeer can land on rooftops without damaging the structures, reindeer actually enter into low level synchronous earth orbit scant few millimeters above the roofs while Santa does his thing. When reindeer deviate from synchronous orbit or effect a change in altitude, they are "flying" irregardless of whatever is moving beneath them.