HOUSTON, TX -- Officials announced today that the Grand Prix of Houston will return to Reliant Park in 2013 with the IZOD IndyCar Series. It was further announced that the event will hereafter be known as the Shell and Pennzoil Grand Prix of Houston thanks to a multi-year title sponsorship agreement between Shell Oil Company and event promoter Mi-Jack Promotions. The inaugural Shell and Pennzoil Grand Prix of Houston will take place at Reliant Park on October 4 – 6, 2013.