diff --git a/selfdrive/car/tests/big_cars_test.sh b/selfdrive/car/tests/big_cars_test.sh
index 863b8bead0..ae23f4d38d 100755
--- a/selfdrive/car/tests/big_cars_test.sh
+++ b/selfdrive/car/tests/big_cars_test.sh
@@ -4,9 +4,8 @@ SCRIPT_DIR=$(dirname "$0")
 BASEDIR=$(realpath "$SCRIPT_DIR/../../../")
 cd $BASEDIR
 
-export MAX_EXAMPLES=300
-export INTERNAL_SEG_CNT=300
+export MAX_EXAMPLES=50
 export FILEREADER_CACHE=1
 export INTERNAL_SEG_LIST=selfdrive/car/tests/test_models_segs.txt
 
-cd selfdrive/car/tests && pytest test_models.py test_car_interfaces.py
+cd selfdrive/car/tests && pytest -n32 -k '(TOYOTA or LEXUS) and test_car_interface' test_models.py