You can safely and successfully transport an ice cream cake using a cake carrier, large cooler or insulated food carrier. The trick is to make sure the carrier you are using is large enough to fit your cake pan along with several ice packs or bags of ice. For best results, I recommend letting your ice cream cake freeze for 24 hours before transporting it to make sure everything is as frozen as possible. I also suggest packing your cake at the very last minute before your departure.