During the chase, posters on a fence can be seen advertising the documentary Ravished Armenia (1919), which dealt with the Armenian genocide.
After paying for The Boy's damages, The Girl rides off in a 1918 Cadillac Type 57.
Prologue: "W-I-L-L spells WILL. There are more WILLS than there are croaks in a bullfrog. For instance--Mr. Will Willing the lawyer. His conscience is as thin as a paper napkin."
The bad guy's car is a 1911 Packard Model 30 Touring. In 2022 an example sold at auction for just over $200,000.