In order to save the world from a nuclear holocaust in 2045, Doc Brown must push the technological age back at least fifty years, preventing Mattel Hoverboards and Mr. Fusion from being crea... Read allIn order to save the world from a nuclear holocaust in 2045, Doc Brown must push the technological age back at least fifty years, preventing Mattel Hoverboards and Mr. Fusion from being created.In order to save the world from a nuclear holocaust in 2045, Doc Brown must push the technological age back at least fifty years, preventing Mattel Hoverboards and Mr. Fusion from being created.