diff --git a/.gitignore b/.gitignore
index 3a8816c..59599ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -160,3 +160,4 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+.aider*
diff --git a/src/solarcarsim/environments.py b/src/solarcarsim/environments.py
new file mode 100644
index 0000000..efd375f
--- /dev/null
+++ b/src/solarcarsim/environments.py
@@ -0,0 +1,3 @@
+# models to generate different environments that the car can drive in.
+# This includes terrain, clouds, wind, solar conditions, and the route along the terrain.
+
diff --git a/src/solarcarsim/physsim.py b/src/solarcarsim/physsim.py
new file mode 100644
index 0000000..ee6f806
--- /dev/null
+++ b/src/solarcarsim/physsim.py
@@ -0,0 +1,5 @@
+# Physical simulations of the car
+# This includes Car parameters, slope, velocity, aerodynamic resistance,
+# rolling resistance, motor efficiency, solar inputs, etc.
+
+
diff --git a/src/solarcarsim/vis.py b/src/solarcarsim/vis.py
new file mode 100644
index 0000000..e69de29