Today he is traveling by means of Wheeled Contrapation(TM). The Wheeled Contraption is inspired by a line from the Hobbit, where someone, probably Gandalf, said that the goblins love their contraptions and mechanical wonders. It could also be a line from The Fellowship of the Ring, where Gandalf says something about Saruman's mind being occupied by mechanical wheels and chimneys and smoke. We may never know the truth on this matter, but I don't need any special canonical motivations to do this little piece.
The goblins will be sculpted to fit better in with the base - and they will naturally get hands and feet. The idea is that they are not working well together and are pulling it with great difficulties. And undermanned as well.
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When we are on the subject of goblins and such: Have any of you played this game?