Given that Mercedes still looked like top dogs in pre-season testing, the burning question at the start of the 2016 F1 season is whether or not the end of 2015 was an aberration. Once Lewis Hamilton wrapped up the drivers' championship with three races to spare in Austin last autumn, his teammate, Nico Rosberg, went on a tear, proving untouchable in Mexico, Brazil and Abu Dhabi. Ask the two rivals what happened, and you'll probably not be shocked to hear that you get rather divergent responses. Hamilton says he may have let his foot off the throttle with the pressure off. "I did not do the bare minimum, but I did what I needed to do to finish the year," the 31-year-old Englishman said during pre-season testing. "If you fight for the championship you have to bring that extra five or 10 percent - after I had bagged the title I didn't need that anymore. I used my energy elsewhere." So there we go; case closed - move along, people, nothing to see here! Or may be not. Nico Rosberg's … [Read more...] about Hamilton hunts F1 hat trick, can Rosberg or Vettel intervene?