I'm visiting a friend and driving from Brooklyn to Connecticut, about an hour and 45 min drive and I want to bring ices (Italian ices, the milk ones, not water) but am not sure about how to make sure they don't melt. I'll be purchasing two or three quarts and they're sold in Styrofoam containers. I know that when I get there I can put the ices right into the freezer, but I don't want it to be soup by that time. Any suggestions? Thank you!