I-95/exit 92B in Virginia (just south of DC) - gas + McD's
Whew, what a subject line...
Anyway, one of the recommendations in my Big Rigs Best Bets was a fill-up off of exit 92B for a truck stop that is RV big rig friendly. While there, we were looking for a lunch stop and found that there is a McDonald's across the street that has angled big rig parking spots (our truck + 42' fifth wheel = 58 1/2') fit nicely. Easy off of the highway and easy back onto the highway.
We've stopped here twice now when traveling through the area - both times, the McDonalds was clean and on-par for McD's food.