What is likely the final trailer for “Nomadland” gives a more hopeful, wistful look at Chloé Zhao’s sobering Americana story about how Frances McDormand loses everything in the Great Recession and sets out on the road.

What’s notable and heartbreaking about the film is that many of its characters come and go as McDormand makes her way throughout the country wherever there’s a job or a place to park her van. And for most of those characters, nearly all of them played by non-professional actors, it’s the only glimpse we see of them before they’re gone. But as this new trailer shows, it’s not really goodbye.

“One of the things I love most about this life is, there’s no final goodbye,” a man says to McDormand in the trailer. “We just say, I’ll see you down the road.”

“Nomadland” has been the...