Despite the expanding economy, there's a reason North Dakota is known as "magnificent desolation." There are more registered vehicles than people here, but there are nearly as many wildlife refuges - making it one of the most unspoiled, beautiful states in the country. Why not make like Lewis and Clark and expedition through this broad and breathtaking state? It was made for road trips in your North Dakota rental car, as the speed limit is 75 miles per hour and cruising along the highways is a breeze (not to mention relatively traffic free). Here are a few good routes to incorporate into your journey.