I laughed at them changing a spark plug prior to the start. I suspect they are pushing too hard on the engine performance to try to out qualify Hamilton and it's killing the engines. I doubt that Hamilton has the number of retirements he had last season. I truly believe many of those were caused intentionally as Mercedes wanted to get a title for Rosberg thinking it would keep him on the team. Rosberg had to see what was going on which was why he decided to retire a winner. I'm wondering about Bottas. He doesn't seem to be having power plant problems but seems to have good and bad tracks.