According to Merriam-Webster, ingenuity can be defined as "skill or cleverness in devising or combining" or "cleverness or aptness of design or contrivance." We'd say that's an apt description of a Frenchman named Emile who reportedly found himself stranded in the deserts of Northwest Africa after breaking a frame rail and a suspension swingarm underneath his Citroën 2CV.
What to do? Why, disassemble the broken hulk and build yourself a motorcycle from its pile of parts, of course! As the story goes, Emile was able to use the inventive machine to escape the desert, though not before convincing the local authorities that he wasn't an insurgent and paying a fine for importing a non-conforming vehicle...
Since Emile was the only soul in the area, nobody has been able to confirm the veracity of the events that led to the little French runabout's conversion into a makeshift motorcycle. That said, judging by the images you can see here (apparently from the March 2003 issue of 2CV Magazine), this Citroën-bred two-wheeler does indeed exist, and it was definitely fashioned from parts scavenged from an old 2CV.
Emile, wherever you are, we take our hats off to your real-life MacGyver skills, sir.