I used to dream of writing the ultimate guide to road food, including local Mom & Pops, "meat-n-three's", and good hippie burrito/veggie restuarants. The key is to arrive hungry in a small town, off the highway preferably. Go to a pay phone with a yellow pages and open the restaurant section. There is always some place listed with a great name like "Bummer's" or "Aint Bee's Feedin Pit" or "Garden of Eatin" or similar. You'll know it the second you see it. It's usually on Main Street. Go there, and if you see bouffants, or old men in plaid shirts just hanging out, you know you've arrived. ;-) I recommend the mac&cheese and green beans as your side dishes. God Bless America!!
