Found on eBay: Hughes Jet Pack Pogo Stick

Artist's impression of Hughes Jet Pack Pogo Stick found on eBay.

Source:
http://cgi.ebay.com/DRAWING-CONCEPT-ART-HUGHES-JET-PACK-POGO-STICK-/170601595578?pt=LH_DefaultDomain_0&hash=item27b8a5c2ba