Sebastian Vettel was left bemused by Mercedes' DAS (dual-axis steering) system, which was uncovered on Thursday during the second day of Formula 1 testing. The system allows the driver to change the toe of the front-wheels by pushing or pulling the steering wheel – whilst the exact benefit is unknown, it's believed it could improve tyre life as well as increased straight-line speed and stability without impacting cornering speeds. The FIA has reportedly given the system the okay according to Mercedes technical chief James Allison. Vettel was left unsure as to whether it is comfortable to use for the driver, comparing it to running in flip flops when you're used to running shoes. 'I have...
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