Since Toro Rosso introduced their shorter nose cone on the STR10, the team also added long fins on each side of the upper edge of the monocoque. It's a unique feature across all current cars and appears to be aimed at reducing air to spill over the edges of the monocoque. This can be a particular issue under yaw, for example when the car is turning left. Air that is then flowing left of the monocoque could spill over the edge and end up in the cockpit opening area, one of the least efficient of a Formula One car, partly due to the movement of the driver's helmet. The fins on the Toro Rosso may prevent this from happening. Similarly, Lotus has opted for a small radius in the rounding...
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