[Just to let you know I'm working on the next vehicle on our vehicle-list: a catering vehicle/sciccor truck. The cargo-container goes up and down if you want. You could poisition it so it will fit any height/any plane.
The sciccors aren't modeled yet, the scale is not completely right and some other modeling stuff need to be done (interior, bridge between container and aircraft etc.). But here's a first stadium picture, serving an AI-747: