Will F1's most volatile rivalry explode in 2018?

Rivalries add a glorious edge of grit and fire to Formula 1, beyond the simple pleasure that comes from masters of their craft expressing their talents on track. How dull the first three seasons of Mercedes' F1 domination would have been had relations between Lewis Hamilton and Nico Rosberg not disintegrated so spectacularly amid all the collisions, suspicions and recriminations.

With that dynamic obliterated by Rosberg's retirement, harmony now reigns at Mercedes - so long as Valtteri Bottas remains such a sanguine team player and Mercedes does nothing to upset Hamilton's newfound equilibrium. But the whiff of interpersonal controversy still coats the Silver Arrows from afar, even though Rosberg is no longer on hand to help give it form within the works team.