Speed bumps With opponents turning up the heat, Trans-Texas Corridor planners need to fill in many blanks as the colossal project nears liftoff. Copyright 2005 Houston Chronicle WHEN first announced, Gov. Rick Perry's $175 billion, 4,000-mile transitway proposal seemed more visionary than practicable. Now that the project is on the verge of transforming itself from political rhetoric to concrete reality, opposition from a nonpartisan range of interests has taken on a sudden urgency. The opponents are discovering just how much they don't know about the biggest transit project to hit Texas since the creation of the interstate highway system. The...