Columbus is one of those cities where the car experience is too nice, highway system built out and roads hardly congest (save for osu football games) . Say you live in worthington and work near downtown perhaps. You will probably be taking 315 or 71 there in like 15 minutes. Even if there was a train line 15 mins walk from your house that took you to downtown, it would probably double your commute at least. Not to mention when its raining or snowing that starts looking not so nice compared to your heated car a ten second walk from the door.