Question: 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?
Sentence (from "Panzer VII Löwe"): The Panzerkampfwagen VII Löwe (Lion) was a design for a super-heavy tank created by Krupp for the German government during World War II.
Relevant evidence: No