diff --git a/experiments/data_provider.py b/experiments/data_provider.py
index 762e22e..0eee028 100644
--- a/experiments/data_provider.py
+++ b/experiments/data_provider.py
@@ -96,7 +96,7 @@
         'likelihood_std': {'value': _RACECAR_NOISE_STD_ENCODED.tolist()},
         'num_samples_train': {'value': 200},
     } for name in ['real_racecar_new', 'real_racecar_new_only_pose', 'real_racecar_new_no_angvel',
-                   'real_racecar_new_actionstack']
+                   'real_racecar_new_actionstack', 'real_racecar_v2']
 })
 
 
@@ -187,18 +187,25 @@ def _rccar_transitions_to_dataset(transitions: Transition, encode_angles: bool =
 
 
 def get_rccar_recorded_data_new(encode_angle: bool = True, skip_first_n_points: int = 10,
+                                dataset: str = 'all',
                                 action_delay: int = 3, action_stacking: bool = False,
                                 car_id: int = 2):
 
     assert car_id in [1, 2]
     if car_id == 1:
-        num_train_traj = 8
+        assert dataset in ['all', 'v1']
         recordings_dir = [os.path.join(DATA_DIR, 'recordings_rc_car_v1')]
     elif car_id == 2:
-        num_train_traj = 12
-        recordings_dir = [os.path.join(DATA_DIR, 'recordings_rc_car_v2'),
-                          os.path.join(DATA_DIR, 'recordings_rc_car_v3'),
-                          os.path.join(DATA_DIR, 'recordings_rc_car_v4')]
+        if dataset == 'all':
+            recordings_dir = [os.path.join(DATA_DIR, 'recordings_rc_car_v2'),
+                              os.path.join(DATA_DIR, 'recordings_rc_car_v3'),
+                              os.path.join(DATA_DIR, 'recordings_rc_car_v4')]
+            num_test_points = 20_000
+        elif dataset in ['v2', 'v3', 'v4']:
+            recordings_dir = [os.path.join(DATA_DIR, f'recordings_rc_car_{dataset}')]
+            num_test_points = 10_000
+        else:
+            raise ValueError(f"Unknown dataset {dataset} for car_id {car_id}")
     else:
         raise ValueError(f"Unknown car id {car_id}")
     files = [sorted(glob.glob(rd + '/*.pickle')) for rd in recordings_dir]
@@ -208,18 +215,16 @@ def get_rccar_recorded_data_new(encode_angle: bool = True, skip_first_n_points:
 
     # load and shuffle transitions
     transitions = _load_transitions(file_names)
-    # indices = jax.random.permutation(key=jax.random.PRNGKey(9345), x=jnp.arange(0, len(transitions)))
-    # transitions = [transitions[idx] for idx in indices]
 
     # transform transitions into supervised learning datasets
     prep_fn = partial(_rccar_transitions_to_dataset, encode_angles=encode_angle, skip_first_n=skip_first_n_points,
                       action_delay=action_delay, action_stacking=action_stacking)
     x, y = map(lambda x: jnp.concatenate(x, axis=0), zip(*map(prep_fn, transitions)))
-    # x_test, y_test = map(lambda x: jnp.concatenate(x, axis=0), zip(*map(prep_fn, transitions[num_train_traj:])))
     indices = jnp.arange(start=0, stop=x.shape[0], step=1)
     indices = jax.random.shuffle(key=jax.random.PRNGKey(9345), x=indices)
     x, y = x[indices], y[indices]
-    num_test_points = 20_000
+
+    # split into train and test
     x_train, y_train, x_test, y_test = x[:-num_test_points], y[:-num_test_points], \
         x[-num_test_points:], y[-num_test_points:]
     return x_train, y_train, x_test, y_test
@@ -380,6 +385,10 @@ def provide_data_and_sim(data_source: str, data_spec: Dict[str, Any], data_seed:
         elif data_source.startswith('real_racecar_new'):
             x_train, y_train, x_test, y_test = get_rccar_recorded_data_new(encode_angle=True, action_stacking=False,
                                                                            action_delay=3, car_id=car_id)
+        elif data_source.startswith('real_racecar_v2'):
+            x_train, y_train, x_test, y_test = get_rccar_recorded_data_new(encode_angle=True, action_stacking=False,
+                                                                           action_delay=3, car_id=car_id,
+                                                                           dataset='v2')
         else:
             x_train, y_train, x_test, y_test = get_rccar_recorded_data(encode_angle=True)
 
diff --git a/experiments/util.py b/experiments/util.py
index 1ddf645..cc366e5 100644
--- a/experiments/util.py
+++ b/experiments/util.py
@@ -321,20 +321,14 @@ def collect_exp_results(exp_name: str, dir_tree_depth: int = 3, verbose: bool =
 
 
 def ucb(row):
-    if row.shape[0] > 1:
-        return np.nan
     return np.quantile(row, q=0.95, axis=0)
 
 
 def lcb(row):
-    if row.shape[0] > 1:
-        return np.nan
     return np.quantile(row, q=0.05, axis=0)
 
 
 def median(row):
-    if row.shape[0] > 1:
-        return np.nan
     return np.quantile(row, q=0.5, axis=0)