Pavesi P4 Military Tractor, Italy
the Pavesi P4 was built in two independent sections joined by a powerful central pivot. This articulated design allowed the front and rear sections to rotate independently, ensuring that all four wheels maintained constant contact with the ground regardless of road imperfections.
The most striking secret of this giant lay in its iron wheels, which were over a meter and a half high and had a system of retractable metal claws called unghie.
When the vehicle moved across firm ground, these parts remained retracted, but upon entering swampy or steep surfaces, the claws mechanically deployed to bite the ground with tremendous force.