public class CarClassData : IEnumerable
    {
        public IEnumerator GetEnumerator()
        {
            yield return new object[] {
                new Car
                {
                  Id=1,
                  Price=36000000,
                  Manufacturer = new Manufacturer
                  {
                    Country="country",
                    Name="name"
                  }
                }
            };
        }
        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
    }