I'm thinking of a very tedious and tiresome (no puin intended) animation as 
viewed from the drivers seat of one of those cars as it traverses the entire 
knot.  Only joking. Very ingenious use of a knot. While I wondered if two 
lanes might have been better for traffic I followed it around and found you 
have all the cars going in the same direction, so guess that'll be okay.  ;)

Now I must ask... Were you able to place the cars using the same method the 
road is done? I figure they are, somehow, but being unevenly spaced that 
might not be so, so I am asking please. Got to know.  :)

-- 
Bob H  www.3digitaleyes.com
http://3digitaleyes.com/imagery/

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