On September 22, 2006, San Francisco submitted a report responding to the USOC questionnaire that was distributed to the remaining three U.S. candidate cities. On the same day, San Francisco 2016 issued a press release announcing the design of a new stadium for both the 49ers and the Olympics/Paralympics. The design involves conversion of the football stadium to one including a 400-meter track by elevating the playing field, and also includes provision for expanded seating capacity for events such as the Olympics and Super Bowl.