Perhaps it was inevitable that Bernie Ecclestone generated a few negative headlines after the recent Jerez test, when he once again made it clear that he is no fan of Formula 1's new power units.
The real picture will only emerge as the years go by, but the twin drives of a) employing technology relevant to manufacturers and b) giving F1 a greener, more sponsor-friendly image will have an impact far beyond any controversy stirred by unreliability in testing or the early races of this season.
One thing is clear - we haven't got here overnight, and it's been a long and involved process. And Ecclestone has been in the loop all along as the rules developed.