[['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_']]

[['_', '_', '_', 'R', '_', '_'], ['_', '_', '_', 'R', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_'], ['_', '_', '_', '_', '_', '_']]

Class Board():

     def __init__(self, cars, exit_board=(5,3), size=6):

    """
    Initialize a new Board object.
    :param cars: A list (@or dictionary) of cars. @can be empty
    :param size: Size of board (Default size is 6).
    """

    self.cars= cars
    self.exit_board=exit_board
    self.size=size
    self.board = [['_']*size]*size

def add_car(self, car):

    """
    Add a single car to the board.
    :param car: A car object
    :return: True if a car was succesfuly added, or False otherwise.
    """

    added=False
    #for car in self.cars:
    x,y=car.get_location()[0], car.get_location()[1]
    if car.get_orientation() == Direction.HORIZONTAL:
        for i in range(car.get_length()):
            self.board[y][x+i] = car.get_color()
            added=True
    else:
        for i in range(car.get_length()):
            self.board[y+i][x] = car.get_color()
            added=True

    return added

red_car = Car('R',2,(0,3),0)
    self.board.add_car(red_car)