Add Yahoo as a preferred source to see more of our stories on Google. In-N-Out burger sign with palm trees in the background at sunset - Miroslav_1/Getty Images Some might argue that In-N-Out is ...

In-N-Out actually pioneered drive-thrus at a time when drive-ins, like the iconic California restaurant featured in "American Graffiti," were starting their ascent on the American cultural landscape.

Lynsi Snyder-Ellingson is dedicated to preserving the legacy of her family's burger chain, In-N-Out. That means slow expansion, refusing to sell to private equity, and avoiding needless tech advances.

Some might argue that In-N-Out is America's best burger chain, and the West Coast staple has its systems down to a science. Some employees on Reddit have estimated that their stores sell at least ...