Your car

Make a determination that you will not eat in your car. You really will not starve if you wait to Better yet don't stop and pick up food to eat at home, FIX a meal when you return home.
Stock your fridge with cooked chicken breasts, some salad and some of those neat new little buns. (don't eat them so don't remember what they are called). Or any whole grain bread or crackers. What about canned tuna? It is very easy to grab good food when you return home. Even a good quality lunch meat is better than the fast food market.
Fix a plate, set at the table and enjoy your MEAL.