What is das in f1?

"DAS" (Dual-Axis Steering) is a steering system developed by Mercedes-AMG Petronas Formula One Team for their 2020 car W11. The system allows the driver to adjust the toe angle of the front wheels while on track, which can provide benefits in terms of tire wear, straight-line speed, and cornering stability. DAS works by allowing the driver to push or pull the steering wheel towards the driver or away from the driver, which adjusts the toe angle. The system was controversial when it was first introduced as some teams questioned its legality. However, it was later deemed legal by the FIA. DAS was only used by Mercedes in 2020, and it is not allowed in the 2021 season.