public class VehicleFixture
    {
        public static readonly Vehicle ToyotaTundra = new Vehicle
                                                          {
                                                              Make = "Toyota",
                                                              Model = "Tundra"
                                                          };
    }

    public sealed class Vehicle
    {
        [MappingPropertyName("Mk")] public string Make { get; set; }
        [MappingPropertyName("Mdl")] public string Model { get; set; }
    }