I have to transport a cake in my car about 70 miles and my main concern is how to keep it from sliding around and messing up the design. The last time I transported a cake, by the time it made it home, the sides where the frosting was were stuck all over the sides of the bos and the top where the flowers were was smashed and the writing had smeared off. I sat the cake on the floor in the back of the car and nothing was on top of it or around it and it still got messed up. I would hate for this to happen again. Please tell me the best type of box and how to position it. I am getting the cake from a bakery, but she does not use tent boxes and I am worried.