The Porsche 918 Spyder is showing what is technically feasible today and is redefining performance limits. The 918 Spyder has reached a crucial phase in its development with tuning of its vehicle dynamics at the Nürburgring. Every Porsche turns laps on the legendary approximately 22 km long North Loop, covering thousands of kilometres in the toughest of sports car tests. One kilometre on what is referred to as the "Green Hell" -- this is the rule of thumb -- corresponds to the stresses of 13 kilometres on public roads. The course -- very challenging topographically -- is an indispensible instrument, especially in tuning all systems related to vehicle dynamics in the 918 Spyder. Of central importance here is the interplay between the active PASM damping system, fully variable aerodynamics, adaptive rear axle steering and the three motors of the parallel full-hybrid drive system. At the same time, the "Ring" motorsport course demands maximum loads from all components, espe- cially drive and chassis components. The Porsche 918 Spyder has the potential to break many records. The current target lap time for the North Loop of the Nürburgring is under 7:22 minutes. That is at least ten se- conds faster than the Porsche Carrera GT. Even more important: the 918 Spyder surpasses previous models and competitors by far in its efficiency as well. As a plug-in hybrid vehicle, it systematically combines the dynamic performance of racing machine with over 795 hp and low NEDC fuel consumption, which -- at about three litres fuel per 100 km -- is better than that of most small cars today. In sum: maximum driving fun with minimal fuel consumption. The 918 Spyder is already living up to its role as the legitimate successor to the Carrera GT, and it clearly surpasses that car's driving performance -- in terms of both acceleration and race track performance: Under three seconds for the sprint from zero to 100 km/h (Carrera GT: 3.9 seconds) and at least ten seconds faster than the best time for the Carrera GT of 7:32 minutes on the North Loop.