public IActionResult ByMake(string make)
        {
            var carsByMake          = this.cars.ByMake(make);
            var carsByMakeViewModel = new CarsByMakeViewModel
            {
                Make = make,
                Cars = carsByMake
            };

            return(View(carsByMakeViewModel));
        }
        public IActionResult AllByMake(string make)
        {
            IEnumerable <CarServiceModel> cars = this.carService.GetAllByMake(make);

            CarsByMakeViewModel model = new CarsByMakeViewModel
            {
                Make = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(make.ToLower()),
                Cars = cars
            };

            return(View(model));
        }