Don’t forget the Amana Colonies in Iowa, about 5 miles north of I-80 at exit 220.

I’ve traveled this road many times. First stop on I70 Should be Schmidt’s Sausage House in the German Village Section of Columbus. They have a variety of good quality german food and beer in a beer garden atmosphere. My next stop would be Hollyhock Hill for great fried chicken in Indianapolis. Finally a stop at Mama Campisi in St. Louis for good Toasted Ravioli. Do not, I REPEAT! Do not go to Rigazzi’s for Toasted Ravioli..Yuck[xx(]
Returning on I-80 I would either go with the Iowa Machine Shed in Urbandale Iowa (just outside of Des Moines) for a stuffed pork chop that you just wouldn’t believe. Or I would also recommend the White Way restaurant in Durant Iowa for another Great Iowa Chop with a huge and delicious salad bar which could be a meal within itself and Sour Cream Raisin Pie. I would also hit one of the Deep Dish Pizza offshoots in the South Chicago Suburbs off I-80. I believe Gino’s and Giordano’s have restaurants there. You might want to check their websites. Finally a trip across I80/90 is not complete across Ohio without a visit to Tony Packo’s in Toledo for their Hungarian style Hot Dogs and sides[:D][:)][8D]

You can’t get more unchained in St. Louis than the Crown Candy Kitchen. It is right off I-70 on St. Louis Avenue – but that exit is for eastbound traffic. The Crown Candy Kitchen, virtually unchanged since 1917 is a neighborhood malt shop with burgers and sandwiches (egg salad is classic). Also the size of the booths are a strong reminder of the days when Americans weighed less.
http://stlouis.citysearch.com/review/5735911/?cslink=cs_profile_tabs_user_review