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 "Landkreuzer P. 1000 Ratte"): The "Landkreuzer" P. 1000 "Ratte" (English: "Land Cruiser P. 1000 "Rat"") was a design for a super-heavy tank for use by Nazi Germany during World War II, proposed by Krupp director Edward Grotte in June 1942, who had already named it ""Landkreuzer"".
Relevant evidence: Yes