Object and Class/Vehicle Catalogue

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Globalization;
using Cataloga;

namespace Cataloga
{
    class Car
    {

        public string Brand { get; set; }
        public string Model { get; set; }
        public string Weight { get; set; }

        public Car(string brand, string model, string weight)
        {
            this.Brand = brand;
            this.Model = model;
            this.Weight = weight;
        }

        public override string ToString()
        {
            return $"{this.Brand}: {this.Model} - {this.Weight}hp";
        }
    }

    class Truck
    {
        public string Brand { get; set; }
        public string Model { get; set; }
        public string Weight { get; set; }

        public Truck(string brand, string model, string weight)
        {
            this.Brand = brand;
            this.Model = model;
            this.Weight = weight;
        }

        public override string ToString()
        {
            return $"{this.Brand}: {this.Model} - {this.Weight}kg";
        }
    }


    class MainClass
    {
        public static void Main(string[] args)
        {
            List<Car> cars = new List<Car>();
            List<Truck> trucks = new List<Truck>();

            string input;
            int sum = 0;
            int sum2 = 0;

            while ((input = Console.ReadLine()) != "end")
            {
                string[] data = input.Split("/");

                string type = data[0];
                if (type == "Car")
                {
                    sum++;

                    string brand = data[1];
                    string model = data[2];
                    string weight = data[3];
                    Car newCar = new Car(brand, model, weight);
                    cars.Add(newCar);
                }
                else
                {
                    sum2++;

                    string brand = data[1];
                    string model = data[2];
                    string weight = data[3];
                    Truck newTruck = new Truck(brand, model, weight);
                    trucks.Add(newTruck);
                }

            }

            cars = cars.OrderBy(x => x.Brand).ToList();
            trucks = trucks.OrderBy(y => y.Brand).ToList();

            if (sum != 0)
            {

                Console.WriteLine("Cars:");
                Console.WriteLine(string.Join(Environment.NewLine, cars));
            }
            if (sum2 != 0)
            {
                Console.WriteLine("Trucks:");
                Console.WriteLine(string.Join(Environment.NewLine, trucks));
            }

        }
    }
}