In the late 1910s Hertz took control of the Walden W. Shaw Livery Corporation. The company had already been producing a car of their own, called the Weidely. He took the rest of the stock bodies and put 6-cylinder Continental engines in them, then sold them. The cars had full-leather trunks. In February 1921, the cars made their debut at the Drake Hotel in Chicago, Illinois during the Chicago Automobile Show.[2] A 4-cylinder car costing $700 was announced in October of that year, but it was never made. After the original Weidely stock was used up, a smaller car was designed. After 1925, Hertz named it after himself.
| Model | Engine | HP | Wheelbase[3] |
| Model R(1921–1923) | Inline 6-cylinder | 75 | 136" |
| Model D-1(1924–1925) | Inline 6-cylinder | 25 | 114" |
