Flying Yankee is not a Zephyr, but the Zephyr's styling and engine (diesel) inspired a lot of other railroads to enter the streamlined era. Many even shrouded their steam locos in a new streamlined shell.

A lot of the limited-production locomotives were produced in HO scale in brass, particularly by Japanese and Korean companies beginning in the late 1970s. Not being mass produced, and being brass, they are on the expensive side.