A fuel cell system for an aircraft is stated, which fuel cell system comprises a fuel cell unit and a suction module. The pot core inductive device allows for adjustments of the air gap formed between the two halves of the pot core structure to adjust its inductive value. The styling arm may also include a brush head with fixed or retractable bristles andor a smoothing plate. In the sitting position, the front wheels are not in contact with the ground, which means that they do not obstruct the manoeuvring of the vehicle in a confined space.