Nut felt from somewhere?

[dado1975]

HEllo you all.

I am new here and new proud user of Citroen DS5, 2013.
Today I was driveing and meanwhile this nut felt down on the driver side, somewhere above the pedals or from the pedals.
Do some one know where this nut belongs?

Thank you for ideas.

Vladimir

[PaulC5]

I suspect it is not part of the car but something left on a shelf near the steering wheel.