Articulated bus

Hello,

currently i am building a vehicle with a trailer. I want the vehicle and the trailer to be connected with a connection which is used in so called Articulated busses

http://en.wikipedia.org/wiki/Articulated_bus

But thats the problem for me...how could that be done? I have experimented with flexiprims, but since you cant attach things to the "flexi side", its not working the way i want. Or did i maybe oversee something? Maybe someone has an idea

I would gues that 2 half cut prims of some length with their away from center side facig/targeting the other bus piece would work (you might get away with one, targeting a framing edge on the other side) the top and bottom will be a little harder depending on your maximum angle, but you might be able to get it in 4 each for the roof and floor (2 for each end, side by side that end up overlapping during turns)

ETA:
the scripting for the targetings is gonna be messy, and there's a slight possibility it's doable by using particle bars, both vertical and horizontal versions targeting the center of one side from the center of the other but I'm not sure about the rotations or viewing angles

the alternative involves constantly resizing and rotating a filler piece that sits in between them which if going to be very math heavy, especially for the roof and floor where you'll be changing not only the width but the taper dynamically