Travelers flying between Boston and Miami on American Airlines usually board a Boeing 737 or Airbus A321 – workhorse planes that traverse the country daily. This spring, some passengers are getting a major plane upgrade for the 3 1/2 hour flight. American is swapping in a Boeing 777, a widebody jet with 100 more seats, seatback entertainment and other perks, on some of the flights. (www.usatoday.com) 更多...