Question: What was the top speed of the fastest automobile in 2015?

Context paragraphs:
Kawasaki Ninja ZX-12R: The Kawasaki Ninja ZX-12R is a motorcycle in the Ninja sport bike series from the Japanese manufacturer Kawasaki produced from 2000 until 2006.  In those years the ZX-12R at 178 hp at low speed to 190 hp at high speed with ram-air intake,was the most powerful production motorcycle up to 2006 and the release of the ZX-14.  It was known as a contender to be the fastest production motorcycle, and for its role in bringing to a truce the escalating competition to build a ever faster motorcycle.  Its top speed of 187 mph made it the fastest production motorcycle for sale from 2000 to 2006.

Ansaldo SVA: The Ansaldo SVA (named for Savoia-Verduzio-Ansaldo) was a family of Italian reconnaissance biplane aircraft of World War I and the decade after.  Originally conceived as a fighter, the SVA was found inadequate for that role.  Nevertheless, its impressive speed, range and operational ceiling, with its top speed making it one of the fastest (if not the fastest) of all Allied combat aircraft in World War I, gave it the right properties to be an excellent reconnaissance aircraft and even light bomber.  Production of the aircraft continued well after the war, with the final examples delivered in 1918.  Two minor variants were produced, one with reconnaissance cameras, the other without cameras but extra fuel tanks.

0 to 60 mph: The time it takes to accelerate from 0 to 60 mph (0 to 97 km/h or 0 to 27 m/s) is a commonly used performance measure for automotive acceleration in the United States and the United Kingdom.  In the rest of the world, 0 to 100 km/h (0 to 62.1 mph) is used.  Present performance cars are capable of going from 0 to 60 mph in under 6 seconds, while exotic cars can do 0 to 60 mph in between 3 and 4 seconds, whereas motorcycles have been able to achieve these figures with sub-500cc since the 1990s.  The Bugatti Veyron Super Sport World Record Edition was, in 2010, the fastest production street legal car to reach 60 mph from a stop, taking about 2.46 seconds.  The fastest automobile in 2015 was the Porsche 918 Spyder, which is a hybrid vehicle taking 2.2 seconds to accelerate from 0 to 60.

Cheetah (Wild Adventures): Cheetah is a wooden roller coaster by Custom Coasters International, located in the African Pridelands Section of the Wild Adventures theme park.  The coaster was named after the Cheetah, the fastest land animal, because of its top speed reaching 65 mph when the coaster first opened, but after years of friction and track deformation the coaster was recorded in 2009 reaching a top speed of 52 miles per hour.  It has a standard out and back layout with five bunny hops and a figure-eight ending.  Built in 2001, Cheetah is the largest roller coaster at Wild Adventures.  In Wild Adventures off season between 2009 and 2010, the Cheetah was given a $1.3 Million renovation by Martin & Vleminckx replacing the track on the figure-eight and smoothing out the rest of the track.  The ride has one train, with six cars per train, and four riders each car in 2x2 seating.

Qinhuangdao–Shenyang High-Speed Railway: Qinhuangdao-Shenyang passenger railway or Qinshen railway () is a passenger-dedicated high-speed railway between Qinhuangdao and Shenyang, spanning a distance of 404 km.  Construction started on August 16, 1999.  Opened on October 12, 2003, it is the first newly built high-speed railway in China, costing CN¥15.7 billion (US$1.9 billion).  It is an electrified dual-track railway designed for a top speed of 200 km/h.  By 2007 its top speed was increased to 250 km/h.  In 2002, high-speed train China Star achieved a top speed of 321 km/h on Qinshen railway, setting a record for Chinese train speed.

M18 Hellcat: The M18 Hellcat (officially designated the 76 mm Gun Motor Carriage M18 or M18 GMC) was an American tank destroyer of World War II, used in the Italian, European, and Pacific theatres, and in the Korean War.  It was the fastest American tracked armored vehicle until the turboshaft-powered M1 Abrams main battle tank appeared decades later.  Even then, most sources list the M1 Abrams with a top speed of only 45 (governed speed) mph, leaving the Hellcat with a superior paved-road top operating speed.  The speed was attained by keeping armor to a minimum, no more than one inch thick and roofless, and by powering the relatively small vehicle with a radial engine originally designed for aircraft usage.  The Hellcat, along with the M4 Sherman-based M10 tank destroyer and the highly effective, 90mm gun-armed M36 tank destroyer, provided American and Allied forces with a mobile anti-tank capability against the newer German armored types.

China Railways CRH380A: The CRH380A is a Chinese electric high-speed train that was developed by CSR Corporation Limited (CSR) and is currently manufactured by CSR Qingdao Sifang Locomotive & Rolling Stock Co., Ltd.  As a continuation of the CRH2-350 program it both replaces foreign technology in the CRH2 with Chinese developments and increases the top speed.  The CRH380A is designed to operate at a cruise speed of 350 km/h and a maximum of 380 km/h in commercial service.  The original 8-car train-set recorded a top speed of 416.6 km/h during a trial run and the longer 16-car train-set temporarily held the world record for the fastest production train at 486.1 km/h .

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 .

Ack Attack: The TOP 1 Ack Attack is a specially constructed land-speed record streamliner motorcycle that, as of March 2013 , has held the record for world's fastest motorcycle since recording a two-way average speed of 605.697 kph on September 25, 2010 in the Cook Motorsports Top Speed Shootout at Bonneville Speedway, Utah.  The Ack Attack's fastest one-way speed was officially recorded at 634.217 kph .  This was the third time in four years the Ack Attack had broken the motorcycle land-speed record.

Ferrari FF: The Ferrari FF (FF meaning "Ferrari Four", for four seats and four-wheel drive) is a grand tourer presented by Ferrari on March 1, 2011 at the Geneva Motor Show.  It is Ferrari's first production four-wheel drive model.  The body style has been described as a shooting-brake, a type of sporting hatchback/estate car with two doors.  It replaced the 612 Scaglietti grand tourer.  The FF has a top speed of 335 km/h and it accelerates from zero to 100 km/h in 3.7 seconds.  Ferrari states that the FF was the world's fastest four-seat automobile upon its release to the public.  The FF costs US$300,000, with 800 being produced during the first year.

Supporting paragraphs: 0 to 60 mph Porsche 918 Spyder
Answer: 340 km/h