I know this is late, but I always transport my stuff in one of the boxes we
made out of styrofoam insulation. I have them in a few different sizes up
to big wedding cakes. Just duct tape the pieces together, make one side a
door (I loop a piece of duct tape to make a "handle" to open it) and put it
on a piece of non-slip stuff in the vehicle!
Jenn.

"Travis and Lori" wrote in message
...
One more thougt, maybe too late, but I would worry more about
condensation on the frosting during thawing. I would refrigerate the
boxes to help keep them cold longer or even transfer them from freezer
to frige on Friday night so they are somewhat thawed, but still solid
before leaving.