// Define the Engine object
const Engine = {
  horsepower: 250,
  fuelType: 'gasoline'
};

// Define the Vehicle object
const Vehicle = {
  make: 'Jeep',
  model: 'Cherokee'
};

// Create a Car object by composing Vehicle and Engine objects using Object.assign()
const Car = Object.assign({}, Vehicle, Engine);

// Test Car object
console.log(Car);