It’s tough stuff to stay true to your roots while adapting to the times.
That is precisely the feat that Sonic Drive-In is trying to accomplish in its continued expansion from a regional darling to a national powerhouse. Certainly, such evolution has been successfully done before—just look at once-regional upstarts such as Chick-fil-A and Chipotle. But the formula for national success is not simple.
In fact, there is no formula.