Alvaro Barba Lopez, who finished fourth in the GT2 category this year in the nr 51 AF Corse Ferrari 430 GT2 with Niki Cadei, thrilled the crowds in Valencia before this weekend's Ferrari World Finals, with a demonstration behind the wheel of his car.   The Valencia-based driver, who was the best rookie of the 2009 season, commented : "It was great to be part of a spectacular event like this, and I am very happy that it took place in front of the Valencia Community who have helped me so much to get where I am today."