Inflatable Helmet for bicyclists?  
www.Hovding.com (http://www.hovding.com)
			
			
			
				Huh.  I could see that in limited use by some of the more fashionable urbanites in Portland's "Pearl District".  But it seems that everywhere else in Oregon the old-fashioned helmet and accompanying helmet hair are considered badges of honor.
			
			
			
				Hov-dork.  That thing would be far more irritating to ride with than a helmet....  Not to mention the stupid questions one would be answering.
			
			
			
				meh
if you want to prevent cars from hitting bikes, then make it a capital offense for someone to run over a biker for any reason. 
accident, intentional, doesn't matter.  run over a biker and you get your head chopped off.  bike accidents will decrease.  lol