Car class in ES6

Car.js

class Car {
  constructor(make, model) {
    this.make = make;
    this.model = model;
  }
  
  start() {
    console.log('vroom');
  }
  
  toString() {
    console.log(`Car - ${this.make} - ${this.model}`);
  }
}

class SportsCar extends Car {
  constructor(make, model, turbocharged) {
    super(make, model);
    this.turbocharged = turbocharged;
  }
  
  start() {
    console.log('VROOOOM');
  }
}


// Actual usage remains the same
var car = new Car('Nissan', 'Sunny');
car.start(); // vroom
console.log(car.make); // Nissan

var sportsCar = new SportsCar('Subaru', 'BRZ', true);
sportsCar.start(); // VROOOOM
console.log(car.turbocharged); // true