If you expect to be paid and treated as professionals, then be professional.
Passengers do notice and while most wouldn't care, all sorts of ideas will flow through their heads as a result.
If you're prepared to 'coast in', what else are you prepared to do? Where do you draw the line, or is that something that needs to be written for you in a manual somewhere because you can't work it out?
My advice, find another job more suited to your skills. NASCAR comes to mind.