The Astrodome has been the home of many other special events, including the Republican National Convention, the NBA All-Star Game, and World Wrestling Federation (WWF) WrestleMania X-Seven. The venue has also seen the likes of historic recording artists such as Elvis Presley. Until 2002, NRG Astrodome was also the host of the Houston Livestock Show and Rodeo, the largest of its kind in the world. The last concert in NRG Astrodome was the largest attended event ever in the building, featuring George Strait on March 3, 2002 at the Livestock Show and Rodeo where he sang to 68,266 people. The Astrodome (and NRG Park in general) gained nationwide attention in September 2005 when it was opened as a massive shelter for refugees fleeing Hurricane Katrina. Each building except for NRG Stadium (which was configured for the Houston Texans) hosted several thousand refugees, and local media dubbed the complex "Reliant City". This "city" was itself evacuated when Hurricane Rita threatened Texas later that month, but many returned after the scare and moved out shortly before the end of the year. The Astrodome has been closed to the general public since 2008 because of fire code violations, and was to undergo renovations in October 2018 to become a multi-purpose event center. The floor of the stadium would have been raised and would have created over 1,000+ parking spaces, while the top floor would be used for events. The project was supposed to start in October 2018 and be completed sometime in 2020. Harris County was to spend $105 million in order to complete this massive overhaul. However, the renovations were rescheduled to 2019, and then put on hold, and then all together scrapped. MDAnderson Cancer Center Speedway at NRG Park The MDAnderson Cancer Center Speedway at NRG Park is a temporary street circuit that is configured throughout NRG Park's parking lot. The speedway hosted the Grand Prix of Houston, a Champ Car race held in 2006 and 2007. The pit lane and paddock for the race teams were located in NRG Arena. Due to the merger between Champ Car and the Indy Racing League in 2008, the 2008 Grand Prix of Houston was canceled. On March 28, 2012, the Verizon IndyCar Series announced that Grand Prix of Houston would return in 2013 to the temporary circuit in NRG Park. The first race since the merger was a doubleheader and the races were