Cloud Tanker Concept (Gas Hauler)

Here is my concept for a Bespin Gas tanker. I wanted an elegant, refined look for the vehicle to match Cloud City's architecture. Art deco trains from the 1930's were a big influence.
I have added some old test renders from the CG aircraft graveyard (a.k.a., my hard drive) for further reference.
© Leon Gor, © Lucasfilm Ltd., © Disney