Vettel's humility and down to earth attitude with fans and team alike is possibly the reason for his over-achievements.
Over here he is seen giving the aerodynamics mechanic a hand with fitting the tail of his stead, the all conquering RB8.
Again, this is at a time when most drivers have headed back to the hotels and called it a day.
The German work etiquette is unique. A very similar attitude was displayed by Michael Schumacher during his Ferrari dominance.