The term "passenger seat" refers to a position in a vehicle specifically designed for someone who is not operating or driving the car, but rather riding along as a passenger. It is typically located next to the driver's seat and provides a comfortable seating area with safety features such as seat belts and airbags. The phrase can also be used figuratively to describe any position of relative comfort or ease while others are doing the work or taking on responsibility, without having direct control over outcomes.