India, Dec. 18 -- Lewis Hamilton and Mercedes won their fifth Formula One championships in 2018 but, even if nothing actually changed at the top, the season at least added an exciting twist to the same old story. Yes, the top three -- the 'Silver Arrows' along with Ferrari and Red Bull -- again won all the races, just as they have for the past five years. And yes, their drivers also filled all but one of the 63 podium places in what was more than ever a two-tier championship. At the front, however, the fight for supremacy was far closer, with the outcome far from clear and Mercedes having to wait until the fourth race to open their win account. Ferrari won six, their best effort since 2008 but still some way short of what might have been, a...