Sometimes when you read some history, you think "someone needs to make a movie out of this". Long Way Round is the story of the last Pan Am Clipper out of California bound for New Zealand before the outbreak of war in the Pacific. Narrowly missing the attack on Pearl Harbor, the crew is flying the last leg to Auckland when they receive word that the US and Japan are at war.
Their route home is cut off, and they are ordered to proceed back to New York...the long way. Amazingly, without a mapped route, without access to the high octane aviation fuel their engines need, a lot of close calls, and over 31,000 miles, they made it to New York.