The chassis has been split down the center line. The fore and aft extensions [swing arms?] have been [reversed? flipped over? in order to put the wheels closer to the center line of the remaining chassis].
The brake drum presses directly on the rear tire, the direction of rotation requires it to rotate backward, at a limit of 20 kph. [had to run in reverse gear to get this rotation, single speed and thus the reason for the 12 mph limit]
The saddle has been built on the end of a (something) and padded with (something else), then wrapped in orange adhesive tape to stunning effect.
The right brake drum is blocked so that the differential distributes all the power to that on the left.
The front steer wheel is the only one to benefit from suspension.
Guess he took it apart then decided he could not eat it and made a bike. The 2CV is probably the simplest car ever made so I guess it's some thing that could be made with a hand full of tools. Don't quite understand why he didn't just fix the car maybe some thing actually snapped off that would require welding.