Mitch drives a 1933 Ford.
The studio shot two days worth of extra scenes in case the Production Code (Hays) Office objected to scenes dealing with the kidnapping or acts of "extreme cruelty" by one of the characters.
Mitch's plane in the film is a Stearman C3-B, registration NC4099, although for this picture it has been changed to the fictitious NR4099. The plane was owned by Paul Mantz, and can be seen in over 20 other films from the 1930s. Mantz was a stunt pilot and provided aviation services to the motion picture industry in a career spanning over 35 years.
The $20,000 reward would equate to over $375,000 in 2019.