The voice of Grampy has only been debated and not exactly identified. Jack Mercer (1935-1937) credited by the modern day Fleischer Studios. Everett Clark, as stated by Don Markestein's Toonopedia. Frank Matalone, other websites.
The Daily Gargle newspaper shows the actual landslide Grampy won by was only one vote.
The novel concept of a subway ascending a building to deliver commuters has become a kind of reality in the 21st century. The Porsche Design Tower in Miami, a luxury condo building, has vehicle elevators that serve the in-residence garages for each unit.