For county commuters by the time you get to Owings Mills you're cruising along then you have to get off the exit, park and then walk all the way to the trains and wait, by that time if you were driving your half way down the beltway. Not to mention sitting in a train with some sketchy characters because of where the train line runs. Less traffic on the roadways too so I think people realize you can drive by yourself and park in the city much faster than relying on the subway. There really aren't that many 'great' stops and obviously no transfers to other subway lines, it's just a poor system with no real benefit.