History Onkel Eberhard's cars

I recently found these photos while helping my wife clean out her aunt's house in Northern California. Her aunt and uncle moved to Saskatchewan from Germany in the late 50's. They later moved to California.
I really like the Opel pictures because it tells a little story. Her uncle was in construction.
Not sure what the deal is with the men and guns. (Cadillac?)
Typical kind of 50's car picture with the Bug and Buick.