text: const car = {
    model: "Fiesta",
    manufacturer: {
      name: "Ford",
      address: {
        street: "Some Street Name",
        number: "5555",
        state: "USA"
      }
    }
  };
  
  // to get the car model
  const model = (car && car.model) || "default model";
  
  // to get the manufacturer street
  const street =
    (car &&
      car.manufacturer &&
      car.manufacturer.address &&
      car.manufacturer.address.street) ||
    "default street";
  
  // request an un-existing property
  const phoneNumber =
    car &&
    car.manufacturer &&
    car.manufacturer.address &&
    car.manufacturer.phoneNumber;
  
  console.log(model); // 'Fiesta'
  console.log(street); // 'Some Street Name'
  console.log(phoneNumber); // undefined
  