Ok, I am doing my BIL's wedding cake at the end of March and am driving 5 hours with 5 layers of cake that will be iced in buttercream and transported each in their own cake boxes. I was going to wait to decorate the cakes with scrolls and edible pearls until I get there, just in case something happens with the icing on the drive there.

So, here are the things of I was thinking of doing for the long drive to help in transporting the cakes. Please add and/or suggest anything that might be of some help to me. The weather will be cool, so we may have to run the heater on low....I always refrigerate my cakes, so I will bring them straight out of the fridge and put directly in car. (It is a PT Cruiser BTW).

1. Sit each cake on a non-skid mat inside each box.
2. Make sure each box is secure from sliding around with towels, etc.
3. Thought I could cover the tops of the boxes with a towel and possibly put some ice in some big zip-lock bags and put on top of boxes to keep the cakes cool in case we have to run the heater.
4. And, of course, drive as careful as possible with my "Wedding Cake on Board" magnetic sign on the back.

If anyone has any advice, experience with this, suggestions they would like to share, I will gladly accept them all!!!

Thanks, in advance, for your help.

You don't really need to cushion with towels, just make sure the boxes are on the same mats that you have inside the cake boxes.
I took a fully decorated and partly stacked wedding cake 6 hours over Labor Day weekend for my sister's wedding and the cakes didn't budge.

I really don't think you need to worry about ice for the cakes, just make sure that the heat isn't set on high. I don't know if your vehicle has seperate controls for the back but if it does just don't run that heater.

Use the skid mats under your cake boxes and the boxes shouldn't move.

Well, I really can't help you with how to transport, but I'll tell you,,, I would make sure I wasn't hungry before I left Smelling that great cake and icing smell,,,, after about 3 hours I'd be eating!!! Anyway good luck with transporting,,, that always freaks me out....