I keep a medium-sized cardboard box in my car for containing largish take out food; pizza, chinese, japanese, etc. Stuff that doesn't fit inside a single sandwich-sized paper bag; those go on the front passenger seat, sometimes on a towel I also carry (e.g., take out from Five Guys as the grease on the fries that they dump inside the bag soaks through). Said cardboard box, with food, goes on the front passenger floor, or rarely in the trunk (if I have passengers). I've never put food in the frunk as there's no temperature control there, even if the drive home only takes a few minutes. I've been doing this for years, before I bought the Tesla.