Airbus A38UF-O
For the eventual trips to Mars, Venus and Uranus. Still with 3 pilots no doubt and a slightly modified "annex 3". Min fuel and Neptune as an alternate...no probs. I'll bet the 777 guys (thats John Deere for the "Dugong" crowd) will still claim it won't carry any freight!
Pilot rest bunk is located outside in this modified STC version.