Lewis Hamilton's spectacular Malaysian Grand Prix engine failure not only effectively decided the 2016 Formula 1 world championship, but it also overshadowed a moment that could become a significant storyline for 2017.
It's easy to assume that Red Bull holds the key to F1's new super-fast era, with the shift back towards more aero-dependent rules likely to put the Milton Keynes-based team back in the title picture. The new rules were enough to relight Adrian Newey's F1 fire, and that in itself is a tantalising prospect that will strike fear - or at least a heightened awareness of the Red Bull threat - in the minds of the other big hitters.
If Red Bull can take the fight to Mercedes this year, F1 gets a much-needed shot in the arm. The dominance of the Silver Arrows from 2014-16 should be applauded, but we're well overdue at least a two-team fight for the world championship. But there's something else F1 needs this year, and we had a preview of it at Sepang last season shortly before Hamilton's world title hopes went up in flames.