diff --git a/config/intersection_zoo.ini b/config/intersection_zoo.ini
index 69a2ea55..3f75eeba 100644
--- a/config/intersection_zoo.ini
+++ b/config/intersection_zoo.ini
@@ -1,8 +1,10 @@
 [base]
 package = intersection_zoo
+vec = multiprocessing
 env_name = sumo
 
 [train]
-total_timesteps = 500_000
+total_timesteps = 50_000_000
+num_workers = 8
 num_envs = 8
 env_batch_size = 8
diff --git a/pufferlib/environments/intersection_zoo/environment.py b/pufferlib/environments/intersection_zoo/environment.py
index 8b21c43e..ecb9e6d1 100644
--- a/pufferlib/environments/intersection_zoo/environment.py
+++ b/pufferlib/environments/intersection_zoo/environment.py
@@ -5,10 +5,8 @@
 from pathlib import Path
 
 import numpy as np
-from env.config import IntersectionZooEnvConfig
-from env.task_context import PathTaskContext
-from env.environment import IntersectionZooEnv
-from sumo.constants import REGULAR
+from intersection_zoo import IntersectionZooEnvConfig, PathTaskContext, IntersectionZooPZEnv
+from intersection_zoo.sumo.constants import REGULAR
 
 import pufferlib.emulation
 import pufferlib.environments
@@ -18,9 +16,9 @@
 def env_creator(name='intersection_zoo'):
     return functools.partial(make, name=name)
 
-def make(name, penetration=0.33, temperature_humidity=68_46, render_mode='rgb_array', buf=None):
+def make(name, data='salt-lake-city', penetration=0.33, temperature_humidity='68_46', render_mode='rgb_array', buf=None):
     tasks = PathTaskContext(
-        dir='temp',
+        dir=Path(data),
         single_approach=True,
         penetration_rate=penetration,
         temperature_humidity=temperature_humidity,
@@ -29,13 +27,13 @@ def make(name, penetration=0.33, temperature_humidity=68_46, render_mode='rgb_ar
 
     env_conf = IntersectionZooEnvConfig(
         task_context=tasks.sample_task(),
-        working_dir='temp',
+        working_dir=Path('temp'),
         moves_emissions_models=[temperature_humidity],
         fleet_reward_ratio=1,
         visualize_sumo=False,
     )
 
     # Create the environment
-    env = IntersectionZooEnv({"intersectionzoo_env_config": env_conf})
+    env = IntersectionZooPZEnv({"intersectionzoo_env_config": env_conf})
 
     return pufferlib.emulation.PettingZooPufferEnv(env=env, buf=buf)