Red Bull Racing chief Christian Horner says the team is unlikely to pursue more action against Mercedes after its protest against its controversial Dual-Axis Steering (DAS) system was thrown out ahead of the Austrian Grand Prix. The title challengers lodged a formal grievance with the FIA over the DAS system – which allows drivers to adjust the toe angle of their front wheels by sliding the steering wheel back and forth along the straights - over concerns it didn’t comply with the technical regulations. Among its concerns were whether the system allows drivers to help keep the tyres warm on out-laps and at the end of safety car periods.     However, the FIA sided with Mercedes, who...
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