Listen to this article There had been whispers ever since Barcelona about the concept potentially exploiting some grey areas of the regulations, and it did not take long for such concerns to be voiced in Bahrain. Red Bull’s Christian Horner was quoted by respected German publication Auto Motor und Sport as questioning the legality of the design. However, his team subsequently moved to deny he had spoken to any media – even though the respected journalist involved was clear he had talked to the team boss. Whether Horner was speaking on or off the record is something only he knows, but in the comments he was reported to have said, he did suggest the Mercedes sidepod was against the ‘spirit’ of the regulations. In F1, it’s incredibly difficult to measure the ‘spirit of the regulations’, because you can only quantify what’s written within them. And, as such, the key factor in the rulebook about th …