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					Originally Posted by  Goose19
					 
				 
				how would to fill them? pneumatic robot stuff? 
 
should be interesting to see 
			
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 I have an suggestion maybe.
Unfortunately I am the proud owner of a blood pressure meter. I haven't taken it apart.... ( yet 

 ). But it's very compact and can obviously generate some good positive pressure. It runs on 4 AA batteries. 
Might be a good choice for a compressor? I paid 80 bucks here in Canada, I know there are cheaper versions.
Judging by the size of the whole unit, I'm sure the compressor would fit in a sleeper compartment.
Love the trailer idea by the way. I'm sure you've seen this video? Great example of rear steer trailers
http://www.youtube.com/watch?v=xGY9TDUAlFc&sns=em
Mario