@Test
 public void testSumIncludingDriver() throws Exception {
   Car car = new Car(1, "model", 2000, 5, true, 1, 2, 3, 1, 2, 1, 2, "path");
   int days = 1;
   int sum = car.getPrice() * days + 200;
   assertEquals(sum, checkService.getSumWithDriver(car, days));
 }