text: import random
  from turtle import Turtle
  
  COLORS = ["red", "yellow", "green", "blue", "purple","black"]
  START_POSITION = 5
  INCREMENT_MOVE = 10
  
  class Manager:
  	def __init__(self):
  		self.all_cars =[]
  		self.car_speed = START_POSITION
  
  	def create_car(self):
  		random_space = random.randint(1,6)
  		if random_space == 1:
  			new_car = Turtle("square")
  			new_car.shapesize(stretch_wid =1, stretch_len =2)
  			new_car.penup()
  			new_car.color(random.choice(COLORS))
  			random_y = random.randint(-250, 250)
  			new_car.goto(300, random_y)
  			self.all_cars.append(new_car)
  
  	def move_car(self):
  		for car in self.all_cars:
  			car.backward(START_POSITION)
  
  	def level_up(self):
  		self.car_speed += INCREMENT_MOVE
  
  