In a lighter moment during the build-up to this weekend's Azerbaijan Grand Prix in the picturesque city of Baku, Ferrari's star driver Sebastian Vettel was quizzed on what appears to be a 'third paddle' on his car's steering wheel.In a relaxed media session, a journalist asked the Ferrari driver what the third paddle on the steering wheel was for.A bemused and smiling Vettel, asked if he was referring to the gear selector 'paddle' which appears on either side of the steering wheel - of semi-automatic up-shift and down-shift of the gears. Clarification was made by the intrepid interviewer, and perhaps sensing a scoop, pressed Vettel by confirming that there was definitely a third paddle on the wheel - suggesting that it's not on Kimi Raikkonen's Ferrari.In the spirit of openness, a smiling Vettel conceded that he didn't know what it was for and that he would have to take a look."They must have put it one with out telling me... so... I don't know, not a big secret," a cheeky Vettel responded.Pressing further, the interviewer asked: "Is it something big?"Armed with a great sense of humour, and witty to boot, Vettel replied: "Huge, huge... otherwise it wouldn't be there, but I need to find out what it is."Proof positive that conspiracy theories and humour blend together like a kaleidoscope throughout the F1 season - particularly when the drivers are yet to get in the car.

On a slightly more serious note, however, F1 teams are renowned for investing millions of pounds and thousands of hours striving to make their cars go quicker.

To find a tenth of a second per lap is often the difference between first and fourth on the starting grid, and potentially a 10-second winning margin come the end of a race.

If Ferrari has an additional paddle on Vettel's steering wheel, and its sole purpose is to make the car perform better, the four-time world champion is highly unlikely to give away trade secrets before a race.

Especially when he has a mere nine-point lead over his closest rival Lewis Hamilton.