Preheat oven to 350 degrees. Saute onion, garlic, green pepper and carrot in oil over medium heat until they become soft. Combine eggs with milk, salt, pepper, garlic powder, and onion powder in a medium-sized bowl. In a large bowl, mix breadcrumbs and flour into the beef and pork with your hands. Add egg and milk mixture, sauteed veggies, ketchup and mix it up with your hands. Press the mixture into a meatloaf pan or a large loaf pan. Bake for 30 minutes, then spread about 1/4 c. ketchup over the top of the loaf, then bake for another hour. Let it sit for a few minutes, then slice and serve!