Because very, very few cities in the US have &quot;good public transport&quot;, and even then they only have it in certain small areas.  In NYC, public transit is pretty decent in Manhattan, and a part of Brooklyn, and that&#x27;s it.  Everywhere else it sucks: Bronx, Queens, Staten Island, the rest of Brooklyn, and everything on the NJ side (Jersey City, Newark, etc.).<p>What we need to do is build SkyTran.