Parking is miserable there. Not only that, they're nuking two parking structures to put in the building. Both parking structures serve the existing tallest building in Seattle, the Columbia Tower. And then, of course, there's the fact that of the two major roads through Seattle, one viaduct is being replaced by the most star-crossed tunnel since Boston's Big Dig and the other crosses through the convention center, thereby guaranteeing it will never be any bigger than it already is. You can't erect a structure in Los Angeles county without two parking spaces on site. Put it this way - Seattle built a tunnel for a subway, but ran out of money for the subway. So then they put buses in it. Then they decided maybe they'd actually try to build a subway and the bus system said "fuck you, our tunnel" so no subway. Meanwhile, the approach Seattle takes to public works projects is so pathetic and overwrought that it has its own Wikipedia page.