"He needs to work on that combining of the transformation, substitute, and shadow clone - he can't pull them off quite simultaneously," said Sasuke, holding up one finger. "He's always been hated by the village and trying to get them to acknowledge him. His 'kekkei genkai' includes enhanced sight, durability, and strength - which are all primary qualities of this dragon we're on."
"Hmmm," said Kakashi, nodding for Sasuke to continue. Also taking note that Sasuke had linked the whole village-shunning thing to Naruto's dragon status and not anything foxy.
"He's eating a lot more, and not just ramen," said Sasuke. "He thinks I didn't seem him take a bite out of a metal fork last night when he was eating. I take it this is all to be kept secret?"
"Yes, it is," said Kakashi.
"Good!" Sasuke turned a smile to Kakashi that seemed just a little mischievous. "When the time comes, and I must face That Man for his crimes. I'm going to need transportation and the element of surprise."
Kakashi considered. "Well, admittedly, dropping out of the heavens aboard a fire-breathing dragon DOES tend to surprise people."
Sasuke nodded. He had to avenge his clan by his own hands. Doing it in style though - that counted too, didn't it?
"You're taking this development surprisingly well," said Kakashi.
"He's still Naruto," said Sasuke. "Still fumble-fingered, stubborn, loud-mouthed, ramen-loving, unpredictable and a knucklehead."
"Gee thanks," said the shadow clone who then dispelled himself as apparently he wasn't needed.