Comparison Test: Lamborghini Gallardo LP560-4 vs. Mercedes-Benz SL63 AMG vs. Porsche 911 GT2

European Editor Matt Davis tests the Lamborghini Gallardo LP560-4, Mercedes-Benz SL63 AMG, and the Porsche 911 GT2 in the Italian countryside. Click here to read the full story in Winding Road magazine.