Those things are badass. do they make them anymore? I have never seen one out in the wild, and first discovered this amazing invention while watching some movie that was filmed in the 70s or earlier.
wtf are these no longer around? cost to manufacture?
http://www.whateverworks.com/itemdy00.asp?T1=K1392&srccode=NXCKC6&utm_source=google&utm_medium=comparison&utm_campaign=datafeed