Sebastian Vettel says Formula 1's hybrid power units are fascinating works of engineering, but they offer no real upside for drivers and fans. Vettel's Russian Grand Prix came to an abrupt end last Sunday after his Ferrari engine suffered an MGU-K failure, an issue that led the disappointed German to quip over the radio: "Bring back f**king V12s", referring to F1's older generation of engines. The Scuderia driver later admitted that his remark simply reflected his frustration at the time of his retirement, and was not a call to return to the past. "In that moment, obviously it was very bitter, because up to that point I thought I drove very well and it was looking like a...
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