As someone that doesn't use public transit it won't really matter to me. My job entails that I drive around to different sites to repair computers. So aside from the fact that I won't use it, I would however use it for things like Jag games or Hockey games or even River front events. I would gladly park the car or Van and use it for things like that.
University students would benefit tremendously if they have an east west route, and like most cities have ample parking at the stations. This would envigorate alot of business' in areas that because of unavailable parking or metered parking they avoid like the plague. Hint....Downtown!
Bring it on, and the usage idea with commercial is great too. Calgary Alberta Canada has a downtown free zone, travel between any downtown zones is free to get on and off, should you start travel outside of those areas then you have to pay. I think that would help downtown also.