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		 How cool.  I don't see why it wouldn't/couldn't be real.  It's basically the same concept as the sliding door of a minivan, but it slides in a differnet direction.  As long as you didn't drive with the door open I think it would work.  Would make for some low clearance.  My major question about it would be safety.  How heavy and reinforced could that door be? 
		
	
		
		
		
		
		
	
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