Like Alonso, Vettel is medium-hard on the brakes but less brutal with the initial steering. He prefers the car to be quite nervous and pointy on entry and is ready to remove some of the initial lock once the front has gripped and caused the rear to step out. He has a great feel for pivoting the car in this way to quicken its direction change.

With the Red Bull’s exhaust-enhanced rear downforce he was the first to develop a counter- intuitive technique of taking what would normally be excessive speed in, getting the front in and then using the resultant oversteer to get him the direction change early in the corner.

Conventionally, this would be counter- productive; the slide would continue after you’d got the direction change, losing you momentum and more than losing what you’d just gained. But with exhaust-enhanced downforce like he had in 2011, he would at this point get back hard on the throttle and have the exhaust gas do its stuff by nailing the back end. So he’d get to have his cake and eat it.

It’s a very unnatural thing to do – with the tail threatening to slide too far, the last thing you feel you want to do is stand on the gas. But Seb proved brilliantly adept at it. When the 2012 regulations took most of the blown-diffuser effect away, the Red Bull initially was merely competitive – and into the bargain Vettel’s superiority over team-mate Mark Webber evaporated. But into the last third of the season Red Bull had not only got a significant chunk of exhaust-derived downforce back via re-shaping of the rear bodywork, but had also introduced a tweak in the rear suspension that gave the car a roll-oversteer characteristic into slow turns.

This got Seb back his quick direction change – and now with enough exhaust-enhanced rear downforce to tame that slide once he got back on the throttle. It loosely replicated the behaviour of the 2011 car, enough to allow Seb back what he termed “my tricks”. Watching the RB9 in action at Barcelona testing through the slow section at the end of the lap it’s very clear that the trait has been retained, maybe even enhanced.

The car positively rotates around itself as the rear rolls, nice and early into the corner, getting the car perfectly lined up with the apex and enabling the steering lock to be removed as he nails the throttle. It’s a beautiful case study of technology and technique developing together.

How much the impetus has come from Adrian Newey and the Red Bull vehicle dynamicists and how much from Vettel isn’t clear, but it isn’t important. It’s almost certainly been an organic development, a direction to follow that has allowed the driver to take full advantage of his strengths and perhaps leading the engineers in a direction they wouldn’t have otherwise thought to go. Why, after all, would you ordinarily want to introduce roll-oversteer into a car?

“We are very pleased with the progress Honda is making and will continue to make until the start of the season.” It is the strongest sign yet that, with Red Bull’s Renault engine deal ending after 2019, a Red Bull-Honda tie-up for 2019 is probable. Marko said Red Bull will support Honda “for example with the facilities that Red Bull Technology has”.