I asked a HART rep several moons ago about parking costs and the location and acquisition costs of land needed to support commuter parking.  Then, as now, I don't really think that the public knows the answers to these questions.  It's going to be a steep hurdle for most commuters when they factor parking into the equation involving their overall daily expense AGAINST the flexibility of driving to work and added mobility of having their cars in the downtown area.  It's almiost impossible, given the information that the City and HART has shared with the unwashed public, to estimate what the fare structure will be.  I suspect that the fares will be initially set at non-sustainable levels simply to attract ridership and will never reflect what is truly needed to pay for operations and maintenance.  The HART will forever require heavy "subsidies" from the taxpayers AND will never have the impact of easing traffic congestion as told in the fairy tales by the spinmeisters downtown.  SHIBAI!