Who canceled the project for the Landkreuzer P. 1000 Ratte, which would have surpassed the Panzer VIII Maus as being the heaviest fully enclosed armoured fighting vehicle ever built?
Panzer VIII Maus Panzerkampfwagen VIII Maus ("Mouse") was a German World War II super-heavy tank completed in late 1944. It is the heaviest fully enclosed armoured fighting vehicle ever built. Five were ordered, but only two hulls and one turret were completed before the testing grounds were captured by the advancing Soviet forces.
Bergetiger The Bergetiger was the name the Allied forces gave to a German World War II armored tracked vehicle based on the Tiger I chassis. The vehicle was found abandoned on a roadside in Italy with terminal engine problems. The main gun had been removed, and a boom & winch assembly had been fitted to the turret. No other Tiger tanks modified in this manner were ever recovered.