Lunch in Dayton OH near I-75/I-70 interchange
It's a bit of a hike from the interchange -- seriously, there's very little in the way of good food on the north side, it's all on the south side and to the east -- but for something very interesting that includes good choices for vegetarians, El Meson is about ten miles from the interchange, but it's RIGHT off the highway on I-75 just south of Dayton.
The Winds in Yellow Springs is a slight bit east of Dayton, and can be reached by taking the US 68 exit South (exit 52).
And, if you head a bit North on I-75, Tipp City has the Coldwater Cafe, which has a few non-meat offerings for lunch. It's exit 68.
El Meson is an excellent suggestion, as well.