There’s that moment on any car trip when hunger shifts from a passing thought to a full-on obsession. Fast-food chains and gas station convenience stores hugging the off-ramps are counting on you to take the easy way out, but it doesn’t always end up that way. Sometimes you luck upon a venerable diner or a roadside café, and you proceed to have the best meal of the year. Why leave it to chance? Minnesota’s byways and thoroughfares are loaded with dining experiences grand enough to set the itinerary, not just accompany it.