If the environment is warm a soft fondant can "melt" - I have had this happen. I don't use a crusting buttercream and typically don't have a problem. I have never used MMF so I don't know what typical issues people have with it, I use MFF. Was it warm in the car? if not, maybe the fondant was just way too soft so it just gradually started stretching with gravity and the jostling of the car.
post #16 of 19
3/9/11 at 9:45pm