Lewis Hamilton, Nico Rosberg and Niki Lauda signed 2014 F1 t-shirt, their signatures in white marker pen above a WORLD CHAMPIONS 2014 F1 WO5 HYBRID lo

Lewis Hamilton, Nico Rosberg and Niki Lauda signed 2014 F1 t-shirt, their signatures in white marker pen above a WORLD CHAMPIONS 2014 F1 WO5 HYBRID logo design, a Mercedes-Benz silver three-pointed star emblem within 2014 World Constructors Champions silver victory laurels on the back, the t-shirt by Puma, size XXL Lewis Hamilton won his second F1 drivers' title in 2014, while Mercedes took its first ever F1 Constructers Championship with the WO5 car using the 1.6-litre V6 PU106A Hybrid engine.