@Test
public void testGetCarburantRestant() {

  assertEquals(100.0, v1.reqCarburantRestant(), 0.0001);
  assertEquals(0.0, v2.reqCarburantRestant(), 0.0001);
  assertEquals(100.0, v3.reqCarburantRestant(), 0.0001);
  assertEquals(0.0, v4.reqCarburantRestant(), 0.0001);
}