unrealized futuristic concepts: a teardrop-shaped automobile, and an Art Deco House of Tomorrow.  In 1929, he designed " Airliner Number 4 ," a 9-deck amphibian  airliner  that incorporated areas for deck-games, an  orchestra , a  gymnasium , a  solarium , and two airplane  hangars . Bel Geddes's book  Horizons  (1932) had