FactoryPattern-step1-3.cs

    public enum RacingType
    {
        Default = 0,
        Toyote = 1,
        Bens = 2,
        Tezla = 3,
        Blanket = 4,
        Chair = 5,
        Gororo = 6,
    }

    public class RacingFactory
    {
        public IRacing Create(RacingType racingType)
        {
            IRacing racing;
            switch (racingType)
            {
                case RacingType.Toyote:
                    racing = new Toyote();
                    break;
                case RacingType.Bens:
                    racing = new Bens();
                    break;
                case RacingType.Tezla:
                    racing = new Tezla();
                    break;
                case RacingType.Blanket:
                    racing = new Blanket();
                    break;
                case RacingType.Chair:
                    racing = new Chair();
                    break;
                case RacingType.Gororo:
                    racing = new Gororo();
                    break;
                default:
                    throw new NotImplementedException();
            }

            return racing;
        }
    }