JEREZ DE LA FRONTERA, SPAIN - JANUARY 31: The rear end bodywork featuring aerodynamically profiled blockers on the car of Kevin Magnussen of Denmark and McLaren is seen during day four of Formula One Winter Testing at the Circuito de Jerez on January 31, 2014 in Jerez de la Frontera, Spain. (Photo by Mark Thompson/Getty Images)
Getty Images

Getty Images Sport Mark Thompson