Java

import java.util.ArrayList;
import java.util.Scanner;

public class Program {

    public static void main(String[] args) {
        Scanner scan = new Scanner (System.in);
        ArrayList<Car> cars = new ArrayList<Car>();

        while (true) {
            System.out.println("1. Enter data for object");
            System.out.println("2. Print");
            System.out.println("3. Find max/min price");
            System.out.println("4. Exit");

            int op = Integer.parseInt(scan.nextLine());

            if (op == 1) {
                System.out.print("Enter car make: ");
                String make = scan.nextLine();
                System.out.print("Enter car price: ");
                double price = Double.parseDouble(scan.nextLine());
                System.out.print("Enter car max speed: ");
                int maxSpeed = Integer.parseInt(scan.nextLine());
                cars.add(new Car(make, price, maxSpeed));
            } else if (op == 2) {
                for (Car c : cars) {
                    System.out.println(c);
                }
            } else if (op == 3) {
                int maxIndex = 0;
                for (int i = 1; i < cars.size(); i++) {
                    if (cars.get(i).getPrice() > cars.get(maxIndex).getPrice()) {
                        maxIndex = i;
                    }
                }
                System.out.println(cars.get(maxIndex));
            } else if (op == 4) {
                break;
            } else {
                System.out.println("invalid input");
            }
        }
    }

}