Not sure what units you are working with, so I have a few to pick from. 
9 Volts:
  
From the rear bumper to the mid-point between the door hinge and wheel well on a 1/64 scale car:
  
Metric, about 4.5cm:
  
		 
		
		
		
		
		
		
			
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				I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
			 
		
		
		
		
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