When I was in Western Australia a cheese sausage was a usual option. Nutritional value: zero. Ability to be called food: well doubtful at best. Would I ever eat one in any other circumstances - hell no!
And then there was the sausage rolls from the Williams Roadhouse (southern roadhouse not the one oat the northern end of town). Homemade, huge, filled with real meat and flavor. Nutritional value: zero. Caloric value: calories don't count when you are on the road.
In New South Wales I discovered the joys of "Service Centres" which are a collection of fast food outlets, a fuel station, toilets and sometimes even a shower randomly placed down the highways (being that most towns are by-passed these days). And it is in these havens of celebrations to all things wrong with the world that I have discovered my lastest road food - Subway. Nothing organic, nothing local or free-range, just a multi-national doing its job.
And I make no excuses for my indulgence - my choice of sandwich has been the pizza (hold the marinara sauce) fresh with swiss cheese, all the salads including jalepenos, salt and pepper and chipotle sauce. I know salami and chipotle make no sense but that is one of the joys of road food.