It is not easy to go away for shabbos. There is so much food that needs to be brought along.

When packing up the car, put the food in a grocery box to keep it secure so it will not spill in the car.

The Crock Pot Food Warmer is a good option to warm up cooked food like chicken soup and cholent.

Another option is to use the Hot Logic Mini Portable Oven Warmer as a hot plate. It's probably best to keep the zipper cover open. Check with the company how long it can safely be plugged in for. Consider using a Shabbos timer for hot plates and warmers so they can go on and off as needed.