How to store this cake in a car?!
Answers:
Best guess I have is put it in a cake dish that's airtight and put that inside a cooler. Use ice or some other insulator/shock absorber, use something to hold the cooler steady in the trunk. Can be tied or weighted with other items around it, just make sure they'll actually keep it in place. The more it gets moved around the more it might slide against the side of the cake dish.
put it in a cake carrier. got mine at the dollar store. then sit it in a box that fits snugly around it so it doesn't slip around. set it on the floor or in the trunk.
If I were you I would call a bakery I believe they can give you the best possible way to preserve the cake.