var horsePower = 50;

function printHP() {
  console.log(this.horsePower);
}

var car = {
  year: '2010',
  make: 'Honda',
  color: 'White',
  transmission: 'Manual',
  horsePower: 140,
  topSpeed: 120,
  printHP: printHP
}

printHP(); // 50
car.printHP(); // 120