Bolt Bus www.boltbus.com [4], by Greyhound Bus Lines, provides daily express service from New York to Washington, Philadelphia and Baltimore.  BOLTBUS has great bus trip deals to NYC - DC!  Try Bold Rewards.  Simply take eight trips on BoltBus and you're eligible for a free one-way ticket trip.

There are also BOLT BUS locations at 34th and 8th (by Tick Tock) and 6th Street, between Grand and Watts