The Frankfurt Motor Show is such a massive auto show that it can take two days to fully absorb all that it offers. We spent our time photographing the most significant concept and production cars at this eclectic show, where the world's largest automakers revealed their design and engineering expertise. Check out our photos of the Ferrari F430 Scuderia, or the angular Lamborghini Reventon. Renault showed the sleek new Laguna sedan and wagon, while rival Citroen displayed the Airscape convertible. Opel had the futuristic Flextreme concept with its hidden dual Segway scooters. VW finally displayed the eagerly anticipated Tiguan compact SUV. The new A4 sedan and stunning RS6 Avant attracted a huge crowd of journalists and industry analysts. Mercedes-Benz revealed the F700 concept, which hints at the future of the S-Class sedan. BMW unveiled the X6, which is arguably the sportiest SUV from a major manufacturer. Jaguar's introduced the striking XF sedan to replace the stodgy S-Type. Mazda revealed the new Mazda6 sedan, bigger than before, but just as attractive. These new cars are just a small sampling of the vehicles displayed at the 2007 Frankfurt Motor Show, which stands out as the probably the best auto show on the planet.