Rail would represent a forever tax on Oahu residents.  The tax should be stopped, and the elevated line should be repurposed as a bikeway.  A roof over the line should be built to protect bike riders from the sun and rain.  Photovoltaic cells should be installed on the roof to make the project a revenue producer instead of a money pit.  It would be the most unique bikeway in the world, and would undoubtedly be the subject of articles in newspapers and magazines everywhere.  It's such a crazy idea, it just might work.