As to the Pabst car, it's presence shows why the law we commonly call the "billboard reefer ban" was enacted. Shippers did not like putting their product in cars that "advertised" another product. Am I correct in understanding many of the "billboard" cars were leased and ran under the reporting marks of their own, ie URTC or GATC, and thus could be found loading products almost anything where a reefer was needed.
