Also create a radar interface

selfdrive/car/tests/test_car_params.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import unittest
+import importlib
 from selfdrive.car.fingerprints import all_known_cars
 from selfdrive.car.car_helpers import interfaces
 from selfdrive.car.fingerprints import _FINGERPRINTS as FINGERPRINTS
@@ -25,8 +26,12 @@ class TestCarParam(unittest.TestCase):
         car_params = CarInterface.get_params(car, fingerprints, has_relay, car_fw)
         car_interface = CarInterface(car_params, CarController, CarState), car_params
 
+        RadarInterface = importlib.import_module('selfdrive.car.%s.radar_interface' % car_params.carName).RadarInterface
+        radar_interface = RadarInterface(car_params)
+
         assert car_params
         assert car_interface
+        assert radar_interface
 
 
 if __name__ == "__main__":