Porsche has given a world debut to its 2015 Boxster Spyder at the New York Auto Show. The new range-topping Boxster retains the independent character of the previous Spyder with the fabric roof still opened and closed by hand, and the 3.8-litre flat six mated only to a manual transmission. The lightest and most powerful Boxster yet takes around 4.5 seconds to sprint to 62 and has a top speed of 180 mph. The new Porsche Boxster Spyder will go on sale in July with prices starting at £60,459 OTR.