The car Bessie Love buys is a Royal Tourist, probably a 1905 model. It is white (most cars of that era were black), has the steering wheel mounted on the right side, and has an external hand brake mounted outside the driver's door. The company ceased production around 1910, so the billboard advertising a 1927 model is fake.
The actors who play the junkman and his son received no credits.
In 1927, cross-country travelers by car were called 'tin can tourists" because of the cheapness of the cars.
The film may be a possible inspiration for The Beverly Hillbillies.