The popular Christmas song, "Six White Boomers", tells of Santa Claus making an extra delivery on Christmas Day in a vehicle drawn by six:

"Six White Boomers" was written in 1960 by Australian Rolf Harris and American John D. Brown.  It tells of six old man kangaroos pulling Santa's sleigh across Australia "through the blazing sun" to return a baby kangaroo to his mother.  Harris apparently wanted a Christmas song that did not feature snow and ice.