Because he is a four-time world champion, has a massive financial contract and he knows his Ferrari has little to no chance of winning races in the 2015 Formula One season unless Mercedes or their two drivers suddenly drop off the face of the Earth, Sebastian Vettel can dip liberally into his bag of jocularity in press conferences while black hatted Lewis Hamilton and white hatted Nico Rosberg do little to dispel the notions that they have senses of what we humans call humor…
