 Complete the following phrase:  The GT600s racing debut came at the Estoril round of the Spanish GT Championship on 17 July 2011, where Unzurrunzaga ran the car under the Blue Jumeirah Team banner. Competing in the GTS class, he finished 14th overall, and sixth in class. Unzurrunzaga then switched to the Red Bull Ring round of the International GT Open, but was unable to start either race. Two months later, he returned to the GT Open, competing in the 