Part four of a long-distance review of the Porsche 930 Turbo S, covering a 2000-mile journey across Europe. Discover how this ...

The ZR1X, by comparison, has a 5.5-liter twin-turbo V8 with a flat-plane crankshaft. Coupled with an electric drive unit, an eight-speed dual-clutch automatic, and AWD, it produces 1,250 hp combined.