There are several passengers to ferry, but not too many. Thus, you might drive the same passenger around a few times over the course of the game. Each passenger's story continues from ride to ride. I ended up re-playing the whole game so that I could give three rides to the passenger Fiona before the game's end—each of her first two ride-stories were cliffhangers, but the first time I played through the game, I missed my chance to give her a third ride and thus to see how her story turned out.
This game was fun. I'm grateful to the folks who work on Steam's Proton tool that allowed me to play this Windows game on my Linux machine.