The Panzerkampfwagen VII Löwe (Lion) was a design for a super-heavy tank created by Krupp for the German government during World War II. The project, initially code-named VK 70.01 (K), never left the drawing board, and was dropped on 5–6 March 1942, in favor of Porsche's heavier Panzer VIII Maus.
O yes I forgot to mention it was already sold before the paint was dry!