Formula 1 pre-season testing is ongoing in Barcelona, Spain and the Mercedes-AMG team has premiered a steering system unlike any other we’ve ever seen.

Onboard footage from Lewis Hamilton’s test runs behind the wheel of the new W11 showed the six-time F1 champion slowly pulling the steering wheel towards him as he entered the main straight before slowly pushing the steering wheel away during braking at the end of the straight. The result of doing so is quite remarkable.

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When Hamilton pulls on the steering wheel, the front wheels of the F1 car ever so slightly point towards each other while the reverse happens when he pushes on the wheel. What Hamilton is doing is adjusting the car’s toe on the fly in a way never seen before. Pundits believe that by decreasing the toe-out along a circuit’s straights, the W11 is able to generate additional heat through the tires, ensuring that they don’t cool down. For cornering, the toe is moved back to its original setting as Hamilton pushes on the steering wheel.

In the hours after the system was noticed, Mercedes Formula 1 technical chief James Allison admitted to the presence of the setup, saying the team describes it as Dual-Axis Steering (DAS). He added that it is completely legal and within the regulations.

“It’s something we’ve been talking to them for some time. The rules are pretty clear about what’s permitted on steering systems and we’re pretty confident that it matches those requirements,” he said. “It just introduces an extra dimension for the steering, for the driver, which we hope will be useful during the year. But precisely how we use it and why we use it, that’s something we will keep to ourselves.”