[F1=6] Sebastian Vettel almost QUIT F1 after rule changes..

“There was a stage last year where he thought about whether he wanted to stop or not – whether he was getting the same level of enjoyment and wanted to continue, “ said Horner.

“He was unhappy with F1, the previous four years had been so successful in a car he loved driving and suddenly things were very different.

“It was like somebody had taken his toy away and took him a while to get a grips with that.

“So he went through a period of disillusion with F1, not Red Bull but the direction F1 was going in and was a bit outspoken in his views.”