For those of us who do not suffer from Automobile Ownership, Northwest's Byways Cafe offers all of that affliction's positive side effects. The walls are cluttered with tourist plates, suitcases hover above the counter, and View-Masters on the tables let Junior experience a faux road trip. And then there is the food, more hearty heartland than greasy spoon. The breakfasts can appear unconquerable, like the Herculean pile of potatoes, cheese, veggies and corned beef known as the Mount Rushmore Hash ($7.75). The lunch menu offers thick sandwiches, like the Turnpike, a delicious avocado-embellished BLT with turkey ($8.25). And then there are the thick, old-school milkshakes ($3.75), which bike riders and walkers will burn off easily. (MB)