Original source: http://world-of-kwg.livejournal.com/135776.html
Translated by: Silentstalker
On 13. September of 1941, a letter arrived to the hands of the People's Commisar of Defense, J.V.Stalin from one V.N.Emelyanov, doctor of medicine from the city of Syzran. In the letter, there was an explanation and the schematics of the invention called "Universal tank Bezdechod". I won't write a detailed description, as it is clear from the slides. But for myself I can only add that the introduction of such a remarkable invention has to radically change the idea of what a scout tank is.
"Over ravines and mountains" :)
SS: yes, this comes from the Soviet archive and was meant seriously