The P107 halftrack was developed by Citroën with use of the Kégresse patent The Kégresse patent used a flexible rubber band instead of interlocking metal parts which formed a track. Citroën bankruptcy made way for Unic to take over and fabricate the P107. 308 units were made by Unic.
is that a secondary fuel tank on the front bumper area or something else? Where are the fuel tank(s)?
It is a roller to push the vehicle up on uneven terrain, the normal bumper would dig itself into the earth but the roller pushes it up. We have not been able to see where the fuel tank is located, we expect it to be somewhere in the chassis.