Boeing unveiled their new 747-8 Intercontinental jumbo passenger jet on Sunday at the company's factory in Everett, Washington.Boeing's newest addition to the 747 family is the world's longest commercial passenger plane at 250.3 feet (76.3 meters long.) Boeing has sold 33 of the new planes already, and passengers can look forward to a better feeling of space and more room for carry-on luggage and personal belongings.