This is my fourth commit. I fixed the issue I was having with the cars breaking apart.

I am very happy that I was able to fix this problem.  I had to email you about this problem and you showed me how this could be completed by creating another class.  This makes so much sense now as you could spawn one part of the car right behind the other to give the illusion that it is one car.
I learned the new skill of using 2 different classes together when making the car 2 wide.

car_back.py

@@ -0,0 +1,5 @@
+class CarBack:
+    character = 'O'
+
+    def __init__(self, position):
+        self.position = position

new.py

@@ -0,0 +1,10 @@
+from retro.game import Game
+from person import Person
+from spawner import CarSpawner
+from path import Car
+
+board_size = (30, 35)
+person = Person(board_size)
+spawner = CarSpawner()
+game = Game([person,spawner], {"score": 0,"lives":3}, board_size=board_size,color="black_on_white")
+game.play()

path.py

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+class Car:
+    character = 'O'
+
+    def __init__(self, position):
+        self.position = position
+        self.next = None
+
+ 
+    def play_turn(self, game):
+        lives = 3
+        width, height = game.board_size
+        if game.turn_number % 3 == 0:
+            x, y = self.position
+            if x == width - 1:
+                game.remove_agent(self)
+                game.remove_agent(self.next)
+            else:
+                person = game.get_agent_by_name('person')
+                new_position = (x+1, y)
+                if new_position == person.position:
+                    lives = lives-1
+                    game.state["lives"] -=1
+                    if game.state["lives"] == 0:
+                        game.end()
+                else:
+                    self.next.position = self.position
+                    self.position = new_position

person.py

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+class Person:
+    name = "person"
+    character = '^'
+
+    def __init__(self, board_size):
+        board_width, board_height = board_size
+        self.position = (board_width // 2, board_height - 1)
+    
+    def handle_keystroke(self, keystroke, game):
+        x, y = self.position
+        if keystroke.name in ("KEY_LEFT", "KEY_RIGHT","KEY_UP", "KEY_DOWN"):
+            if keystroke.name == "KEY_LEFT": 
+                new_position = (x - 1, y)
+            if keystroke.name == "KEY_RIGHT":
+                new_position = (x + 1, y)
+            if keystroke.name == "KEY_UP":
+                new_position = (x, y - 1)
+            if keystroke.name == "KEY_DOWN":
+                new_position = (x, y + 1)
+            if game.on_board(new_position):
+                if game.is_empty(new_position):
+                    self.position = new_position
+                else:
+                    game.end()

spawner.py

@@ -0,0 +1,19 @@
+from random import randint
+from path import Car
+from car_back import CarBack
+
+class CarSpawner:
+    display = False
+
+    def play_turn(self, game):
+        width, height = game.board_size
+        game.state['score'] += 1
+        if self.should_spawn_car(game.turn_number):
+            y = randint(1, height-1)
+            car3 = Car((0, y))
+            car3.next = CarBack((1,y))
+            game.add_agent(car3)
+            game.add_agent(car3.next)
+
+    def should_spawn_car(self, turn_number):
+        return randint(0, 1000) < turn_number