Let’s face it.  Pretty tough to get around the planet in one night, and hit every house. This article says that in order to get each child one two pound present, he’d be hauling over 321,000 tons of presents.  And forget the eight tiny reindeer.  You’d need 214,000 reindeer, (increasing total payload.) Only one sticking point- 353,000 tons traveling at 650 miles per second builds up so much heat, the whole gang would just vaporize.  The lead pair of reindeer alone would absorb 14.3 quintillion joules of energy per second. Each. Got that?  TLC’s running a great show on the science of Santa and Christmas, too.