I will drive for a few days.
First day is less problematic because I will prepare for myself, but next days I will have to manage.
I am thinking about: milk, cheese, eggs
Fruits: fresh dates, ripe bananas,grapes
Juices: apple juice, orange juice, coconut water I will share with my friend.
I have also canned fish(sardines) in case when there is nothing to eat.
I prefer to avoid buying food on the way as I will drive mostly on the motorway and the quality of food is questionable.
I would like to eat minimum 3000kcal per day, so the food must be caloric dense, and easy to store, not meat though, and no cooking.