What is the hierarchy of seating positions in a car?

[StellaMarie]

When a professional driver is at the wheel, under normal circumstances, the right rear seat is reserved for the leader or the most distinguished guest. The seating order should generally be: right rear seat, left rear seat, middle rear seat, and front passenger seat. However, in practice, the preference of the highest-ranking or eldest passenger should be considered, as the front passenger seat offers the highest comfort when the car is full. Other seating etiquette includes: when the owner is driving, the order of precedence should be: front passenger seat, right rear seat, left rear seat, middle rear seat; when a leader is present, they should sit in the rear, while assistants, interpreters, or security personnel usually occupy the front passenger seat; when taking a taxi, it is best to sit in the rear.