code: def test_single_car(self):
      print("TestCollisionSensor.test_single_car")
  
      bp_vehicles = self.world.get_blueprint_library().filter(
          "vehicle.*"
      )
      bp_vehicles = self.filter_vehicles_for_old_towns(bp_vehicles)
      cars_failing = ""
      for bp_veh in bp_vehicles:
          # Run collision agains wall
          event_list = self.run_collision_single_car_against_wall(
              bp_veh
          )
  
          if len(event_list) == 0:
              cars_failing += " %s" % bp_veh.id
  
      # Check result events
      if cars_failing != "":
          self.fail(
              "The collision sensor have failed for the cars: %s"
              % cars_failing
          )
  
file_path: carla/PythonAPI/test/smoke/test_collision_sensor.py
imports: from .None import SyncSmokeTest
  import carla
label_desc: Use image node_id 4 for calling the TestCollisionSensor obj's underlying member method code with example usage: obj.test_single_car() without return types