He may be portly. He may have an old fashioned sleigh. He may be a bit old and those reindeer don't look fast but looks can be deceiving. Try doing this when you have gray in your beard and it's cold outside.
But Sweco's report on Santa's most efficient route -- which takes into account factors like geographic density and the fewest detours -- shows that he wouldn't be able to make his round-the-world trip from there in time.
"He has 34 microseconds at each stop" to slide down the chimney, drop off the presents, nibble on his cookies and milk and hop back on his sleigh, Larsson said.
Santa's reindeer must travel at a speed of 5,800 kilometers (3,604 miles) per second to make the trip on time.
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