Actually I myself, and seen lots of users, put in an efficient cooler, rather than the compressor fridge they already own,
when trips are short and ice-civilization in easy reach.
I own half a dozen Yetis. If I'm going overnight in the truck, my fridge is coming along. Your comment doesn't make any sense. Ice takes more money, time, and space than using the fridge you own. You also have to double pack your food so it doesn't get wet as the ice melts. What a PITA. Give me one reason to use a cooler rather than the fridge on an overnight trip. Just one.