What did Harley Brinsfield do that paved the way for Subway?
Harley Brinsfield:  With his second wife, Arlene Levy Brinsfield, he opened Harley Submarine Sandwich Shops, which, largely due to the publicity generated by his show, became one of the first and largest local fast food franchises pre-dating both McDonald's and Subway by many years.
i don't know