After Chrysler began using auto racing as a promotional tool to sell its cars, in 1933 DeSoto recruited Hartz for a publicity stunt by driving a car backwards across the country. During mid-August 1934, he set 72 new AAA stock car records at the Bonneville Salt Flats course in Utah in a Chrysler Imperial Airflow coupe.
In 1933, DeSoto hired Hartz for a publicity stunt involving driving a car backwards across the country. In mid-August 1934, he set numerous AAA stock car records at the Bonneville Salt Flats course in Utah using a Chrysler Imperial Airflow coupe.