diff --git a/rb_ws/src/buggy/buggy/simulator/velocity_ui.py b/rb_ws/src/buggy/buggy/simulator/velocity_ui.py
index 4bc845e0..6fc3112b 100644
--- a/rb_ws/src/buggy/buggy/simulator/velocity_ui.py
+++ b/rb_ws/src/buggy/buggy/simulator/velocity_ui.py
@@ -52,15 +52,11 @@ def main(args=None):
     init_vel = float(sys.argv[1])
     buggy_name = sys.argv[2]
 
-    vel_ui = VelocityUI(init_vel, buggy_name)
+    velocity_ui = VelocityUI(init_vel, buggy_name)
 
-    try:
-        rclpy.spin(vel_ui)
-    except KeyboardInterrupt:
-        print("Shutting down velocity UI")
-    finally:
-        vel_ui.destroy_node()
-        rclpy.shutdown()
+    rclpy.spin(velocity_ui)
+    velocity_ui.destroy_node()
+    rclpy.shutdown()
 
 if __name__ == "__main__":
     main()
\ No newline at end of file
diff --git a/rb_ws/src/buggy/buggy/simulator/velocity_updater.py b/rb_ws/src/buggy/buggy/simulator/velocity_updater.py
index 6cc90f3a..ed63a02d 100644
--- a/rb_ws/src/buggy/buggy/simulator/velocity_updater.py
+++ b/rb_ws/src/buggy/buggy/simulator/velocity_updater.py
@@ -15,7 +15,7 @@ class VelocityUpdater(Node):
     # 'list[tuple[float,float,float,float]]'
     # need further update such as more data or import data from certain files
     CHECKPOINTS = [
-        (589701, 4477160, 20, 0.5)
+        (589701, 4477160, 20, 5)
     ]
 
     def __init__(self, init_vel: float, buggy_name: str):
@@ -76,15 +76,11 @@ def main(args=None):
     init_vel = float(sys.argv[1])
     buggy_name = sys.argv[2]
 
-    vel_updater = VelocityUpdater(init_vel, buggy_name)
+    velocity_updater = VelocityUpdater(init_vel, buggy_name)
 
-    try:
-        rclpy.spin(vel_updater)
-    except KeyboardInterrupt:
-        print("Shutting down velocity updater")
-    finally:
-        vel_updater.destroy_node()
-        rclpy.shutdown()
+    rclpy.spin(velocity_updater)
+    velocity_updater.destroy_node()
+    rclpy.shutdown()
 
 if __name__ == "__main__":
     main()
\ No newline at end of file
diff --git a/rb_ws/src/buggy/launch/sim_2d_single_velocity.xml b/rb_ws/src/buggy/launch/sim_2d_single_velocity.xml
new file mode 100644
index 00000000..c64491b6
--- /dev/null
+++ b/rb_ws/src/buggy/launch/sim_2d_single_velocity.xml
@@ -0,0 +1,26 @@
+<launch>
+
+    <node pkg="foxglove_bridge" exec="foxglove_bridge" name="foxglove" namespace="SC"/>
+    <node pkg="buggy" exec="hello_world" name="hello_world" namespace="SC" />
+    <node pkg="buggy" exec="sim_single" name="SC_sim_single" namespace="SC">
+        <param name="velocity" value="12"/>
+        <param name="pose" value="Hill1_SC"/>
+    </node>
+    <node pkg="buggy" exec="sim_single" name="NAND_sim_single" namespace="NAND">
+        <param name="velocity" value="12"/>
+        <param name="pose" value="Hill1_NAND"/>
+    </node>
+
+    <!-- velocity ui and updater nodes -->
+    <node pkg="buggy" exec="velocity_ui" name="velocity_ui" namespace="SC">
+        <param name="initial_vel" value="12"/>
+        <param name="buggy_name" value="SC"/>
+    </node>
+    <node pkg="buggy" exec="VelocityUpdater" name="velocity_updater" namespace="SC">
+        <param name="initial_vel" value="12"/>
+        <param name="buggy_name" value="SC"/>
+    </node>
+
+    <!-- <node name="foxglove" pkg="foxglove_bridge" type="foxglove_bridge" />
+    <node name="hello_world" pkg="buggy" type="hello_world" /> -->
+</launch>
\ No newline at end of file
diff --git a/rb_ws/src/buggy/setup.py b/rb_ws/src/buggy/setup.py
index 42318d08..444cf4c7 100644
--- a/rb_ws/src/buggy/setup.py
+++ b/rb_ws/src/buggy/setup.py
@@ -26,6 +26,8 @@
         'console_scripts': [
             'hello_world = buggy.hello_world:main',
             'sim_single = buggy.simulator.engine:main',
+            'sim_velocity_ui = buggy.similator.velocity_ui:main',
+            'sim_velocity_updater = buggy.similator.velocity_updater:main',
             'watchdog = buggy.watchdog.watchdog_node:main'
         ],
     },