What is the top speed of the fastest automobile in 2015?
Porsche 918 Spyder The Porsche 918 Spyder is a mid-engined plug-in hybrid sports car by Porsche. The Spyder is powered by a naturally aspirated 4.6-litre V8 engine, developing 616 PS , with two electric motors delivering an additional 283 PS for a combined output of 899 PS . The 918 Spyder's 6.8 kWh lithium-ion battery pack delivers an all-electric range of 12 mi under EPA's five-cycle tests. The car has a top speed of around 340 km/h .
Audi R8 Le Mans Concept The Audi R8 V12 TDI (later renamed the Audi R8 TDI Le Mans), was unveiled as a diesel engined concept car as an upgraded version of the Audi R8, was presented at the 2008 North American International Auto Show on 13 January, and the Geneva Motor Show in March. It was to use a 6.0-litre V12 engine, utilising Volkswagen Group's long-established Turbocharged Direct Injection (TDI) turbodiesel technology. This engine was rated 368 kW , and 1000 Nm of torque. It uses Audi's quattro permanent four-wheel drive system, and is longitudinally mid-engined. It has a six-speed manual transmission. It accelerates from 0 to in 4.2 seconds, and its top speed is 325 km/h .