1Bring 4 quarts of water to a boil in a large pot. Add salt and elbow macaroni.
2Cook macaroni for 9-12 minutes or until tender. Drain and set aside.
3Shred carrots and finely chop white onion.
4In a large bowl, combine cooked macaroni, shredded carrots, chopped onion, apple cider vinegar, sugar, mayonnaise, heavy cream, salt, and black pepper.
5Mix until everything is well combined.
6Chill in the refrigerator for at least 1 hour before serving.