Information about the winner and the solution
My dashboard (vintage 1986 Oldsmobile Custom Cruiser wood-grained wagon)
	has two mile-measuring thingys on it:
A) an odometer that measures how many miles my car has traveled 
	since it was born;
                [_][_][_][_][_][_]       <-- this is A
B) a "trip" odometer that measures how many miles the car has
	traveled since I last set it to zero by pushing a button.
                      [_][_][_][_]  *    <-- this is B  (* is the button!)
   But the button is broken, and I can no longer reset it to 0000 !
Well, I often look at my dashboard, and the other day it looked like:
                 9  0  5  8  7  4
                       1  3  6  2  *
 The numbers were all different.  I was truly amazed.  I wondered how far
 I would have to travel before this happened again.  When it wasn't obvious
 how to figure this out ... I thought this might be worthy of the POTM crew!