let rectangular shape follow path

Hi

I'd like to be able to draw a path (2D) - both ends of a rectangular shape must follow that path (to simulate the transport of some heavy equipment along the path, to see how much space the transportation takes op when turning corners...)

 The attached figure explains all.  

Autoturn from Transoft cannot do the job for me, since I cannot have the front and back of a veichle follow the same path (independing steering of each end of the veichle).

I belive the task is quite simple, perhaps a VBA macro can do it, or some of the tools in InRoads can be (mis)used? Or some Microstation functionality that I do not know of?

Any Idea - or should I put the question in another forum?

Best regards and merry Christmas, Martin