North Dakota is number one in the nation in shortest commute times. The average commute time in North Dakota is 16.6 minutes. South Dakota: 16.7 minutes.
(I hate to throw in an anomaly that probably was not accounted for: the fifteen-minute wait time warming up the car in the middle of the winter. Or maybe it was accounted for. Most North Dakotans I know have about a one-minute commute. Add that to the 15-minute warm-up and you have about 16 minutes. Those that don't have a car, take the high-speed light rail.)
That's a little joke: there is no high-speed light rail in North Dakota. We do have Amtrak, which is neither high speed nor light.