http://en.wikipedia.org/wiki/Bedaux_Expedition
I watched a documentary on this ,
I wonder if anyone ever got the halftracks out of the river?
anyone know?
Citroen was very keen on the Kégresse track system for his vehicles. I believe that there was an expedition to cross the Sahara using them in about 1922.
Interesting that they were used on the American continent too.
If you parlez le Francais (if that is the term) then you might find this of interest-
http://www.youtube.com/watch?NR=1&feature=endscreen&v=V5z8RIsJtgE