There's no room for 'passengers' on this project; everybody must do his share of the work.
There were two 'passengers' in the car in addition to the driver.
a 'passenger' train/ship [=a train/ship that carries passengers]
(..) going fast. Exactly. You can do that, right? Obviously we won't do that. And there's just one passenger instead of six. With suits and gear, that's another ? Ditch the life support, don't need it. And we'll get mark to wear (..)2015 The Martian