In the 1950s, the American H.L. Yoh Company introduced tank concepts with non-standard configurations and rather unusual shapes. One of the main features of the proposed vehicles was a reserve track that could be used if the main one was destroyed.
While they were never produced, each tank was quite feasible, at least as a prototype. Now, these heavy vehicles with unique mechanics are coming to the World of Tanks Supertest. Watch this video to learn more about them!