Now this might be on account of when you travel to any extent, you get to try and experiment with many different types foods. You discover where and what to eat, based on your personal experiences, fellow riders and if you're technologically-savvy...through websites such as this one:
According to these folks, they define 'roadfood' as the following:
Roadfood means great regional meals along highways, in small towns and in city neighborhoods.
It is non-franchised, sleeves-up food made by cooks, bakers, pitmasters, and sandwich-makers who are culinary folk artists. Roadfood is almost always informal and inexpensive; and the best Roadfood restaurants are colorful places enjoyed by locals (and savvy travelers) for their character as well as their menu.
So Popeye's, Wendy's and Long John Silver's don't count, y'hear...?
You just might want to check out their website, if you're gonna go stateside!