Alas, the Mashin have departed from Cephiro--I'm not sure you could ride inside, since they bonded with us specifically, but I would have certainly let you ride in Windam's hand.

Um... a little? They would seem like it, but it's taken from natural forces. Essentially, we use machines to generate lightning to power other machines. [So apparently Akaneia hasn't advanced very far, technologically.] What do you like most about the tree, Sir Owain?