Icefield wrote:

The steamboat design looks quite hard to get, but I think it is the best vehicle, because it can take 4 people around the world!!! Maybe 2 lvl 50? One water support and one fire attack, both carries lots of syrups. But it is good to ask advice in the game.

I think the plane is second best, because it is relatively easy to make, compare to its value

thise one isnt that hard as u think
if done this quest with some one of lvl 55 with goddes spell i only needed to defence

just ask on local for people to help jo in the cave before the wolf attack
thats how i made it