diff --git a/README.md b/README.md
index 1b4375f..fa81d58 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,8 @@ ruby run.rb
 * [car-brake.wav](src/media/sounds/car-brake.wav) and [car-speed.wav](src/media/sounds/car-speed.wav) by [FreeSoundEffects.com](http://www.freesoundeffects.com/free-sounds/cars-10069/)
 * [menu.wav](src/media/sounds/menu.wav) by [Azure](http://www.flashkit.com/loops/Pop-Rock/Pop/Whatcha-Azure-10593/index.php)
 * [menu-option.wav](src/media/sounds/menu-option.wav) by [Independent.nu](http://opengameart.org/content/16-button-clicks)
+* [ambulance.wav](src/media/sounds/ambulance.wav) by [Partners In Rhyme](http://www.freesoundeffects.com/free-track/amb-426608/)
+* [police.wav](src/media/sounds/police.wav) by [Partners In Rhyme](http://www.freesoundeffects.com/free-track/police-siren-426661/)
 * [Need for Font.ttf](src/media/fonts/NeedforFont.ttf) by [Magique Fonts](http://www.1001fonts.com/need-for-font-font.html)
 
 ## Contributing
diff --git a/src/car.rb b/src/car.rb
index 7b497b1..ccb7e45 100644
--- a/src/car.rb
+++ b/src/car.rb
@@ -1,10 +1,12 @@
 class Car
-  attr_reader :x, :y
+  attr_reader :x, :y, :song
+  attr_accessor :sample
 
-  def initialize(animation)
+  def initialize(animation_file, song_file)
     pos = [180.0, 255.0, 330.0]
-    @animation = animation
-    @x = pos[rand(pos.size)]
+    @animation = Gosu::Image.load_tiles(animation_file, 140, 140)
+    @song = Gosu::Sample.new(song_file) if song_file
+    @x = pos.sample
     @y = rand(100.0..170.0) * -1
     @angle = 0.0
     @vel = 2.5
diff --git a/src/data/data.json b/src/data/data.json
index 475a4a1..feee546 100644
--- a/src/data/data.json
+++ b/src/data/data.json
@@ -1 +1 @@
-{"high_scores":[0,0,0,0,0],"game_over":["GAME OVER","SUCH A FOOL","SUCH A LOSER","You'll pay\nfor this!","Hey!\nDon't do that!","Pay attention!","Speed it\nup already,\njackass!","Wake the\nf*ck up, idiot!","Stay in\nyour lane!","Pick a speed\nand stick\nwith it!","You're\nan idiot!","Learn how\nto drive!","Thanks for\ncutting me\noff!","Blinker?"],"current_car":0,"config":{"sound":false}}
\ No newline at end of file
+{"high_scores":[39,39,0,0,0],"game_over":["GAME OVER","SUCH A FOOL","SUCH A LOSER","You'll pay\nfor this!","Hey!\nDon't do that!","Pay attention!","Speed it\nup already,\njackass!","Wake the\nf*ck up, idiot!","Stay in\nyour lane!","Pick a speed\nand stick\nwith it!","You're\nan idiot!","Learn how\nto drive!","Thanks for\ncutting me\noff!","Blinker?"],"current_car":2,"config":{"sound":true}}
\ No newline at end of file
diff --git a/src/gameState.rb b/src/gameState.rb
index cf38464..b817203 100644
--- a/src/gameState.rb
+++ b/src/gameState.rb
@@ -16,7 +16,7 @@ def initialize(options = {})
 
     @road = Road.new
 
-    @player = Player.new(Gosu::Image::load_tiles(CARS[@main.data['current_car']], 140, 140))
+    @player = Player.new(CARS[@main.data['current_car']][0], CARS[@main.data['current_car']][1])
     @player.warp(WIDTH / 2, HEIGHT - 90)
 
     @cars = []
@@ -27,6 +27,9 @@ def initialize(options = {})
     @car_speed = Gosu::Song.new('src/media/sounds/car-speed.wav')
 
     @main.play_sound(@car_speed, true)
+    if @player.song
+      @player.sample = @main.play_sound(@player.song, true, 0.5)
+    end
   end
 
   def millis
@@ -36,7 +39,12 @@ def millis
   def update
     if @alive
       if millis - @last_millis > @cars_interval
-        @cars << Car.new(Gosu::Image::load_tiles(CARS.sample, 140, 140))
+        next_car = CARS.sample
+        car = Car.new(next_car[0], next_car[1])
+        if car.song
+          car.sample = @main.play_sound(car.song, true, 0.3)
+        end
+        @cars << car
         @last_millis = millis
       end
       if millis / 1000 > @interval
@@ -56,7 +64,10 @@ def update
       @road.move
       @cars.each(&:move)
       @cars.each do |car|
-        car = nil if car.y >= 512 + 140
+        if car.y >= 512 + 140
+          car.sample.stop if car.sample
+          car = nil
+        end
       end
       @cars = @cars.compact
       if @player.collision?(@cars)
@@ -67,6 +78,7 @@ def update
           @main.data['high_scores'] << @player.score
           @main.data['high_scores'] = @main.data['high_scores'].sort.reverse.take(5)
         end
+        @player.sample.stop if @player.sample
       end
       @player.set_score(millis / 226)
     end
@@ -84,11 +96,13 @@ def draw
   def button_down(id)
     if id == Gosu::KbEscape || id == Gosu::GpButton1 || !@alive
       @car_speed.stop
-      @cars.each do |_car|
+      @cars.each do |car|
+        car.sample.stop if car.sample
         car = nil
       end
       @cars = @cars.compact
       @player.set_score(0)
+      @player.sample.stop if @player.sample
       @main.state = 0
     end
   end
diff --git a/src/garageState.rb b/src/garageState.rb
index 446aa25..95a053d 100644
--- a/src/garageState.rb
+++ b/src/garageState.rb
@@ -1,5 +1,5 @@
 class GarageState < State
-  def initialize(options={})
+  def initialize(options = {})
     super options
     @option_font = Gosu::Font.new(15, name: 'src/media/fonts/NeedforFont.ttf')
     @options = [
@@ -18,7 +18,7 @@ def initialize(options={})
     @option_sample = Gosu::Sample.new('src/media/sounds/menu-option.wav')
     @song = Gosu::Song.new('src/media/sounds/menu.wav')
     @main.play_sound(@song, true)
-    @car = Gosu::Image::load_tiles(CARS[@main.data['current_car']], 140, 140)
+    @car = Gosu::Image.load_tiles(CARS[@main.data['current_car']][0], 140, 140)
     @car_font = Gosu::Font.new(20, name: 'src/media/fonts/NeedforFont.ttf')
   end
 
@@ -36,7 +36,7 @@ def draw
         @car_font.draw(caption, option[1], option[2], ZOrder::UI)
       end
     end
-    image = @car[Gosu::milliseconds / 100 % @car.size]
+    image = @car[Gosu.milliseconds / 100 % @car.size]
     image.draw_rot(355, 155, ZOrder::Cars, 0.0)
   end
 
@@ -47,7 +47,7 @@ def button_down(id)
         @main.state = 0
       else
         @main.data['current_car'] = @current_option
-        @car = Gosu::Image::load_tiles(CARS[@main.data['current_car']], 140, 140)
+        @car = Gosu::Image.load_tiles(CARS[@main.data['current_car']][0], 140, 140)
       end
     elsif id == Gosu::KbDown || id == Gosu::GpDown
       @main.play_sound(@option_sample)
diff --git a/src/main.rb b/src/main.rb
index 621900f..d13aae0 100755
--- a/src/main.rb
+++ b/src/main.rb
@@ -13,14 +13,14 @@
 WIDTH = 512
 HEIGHT = 512
 CARS = [
-  'src/media/images/car.png',
-  'src/media/images/ambulance.png',
-  'src/media/images/audi.png',
-  'src/media/images/black_viper.png',
-  'src/media/images/mini_truck.png',
-  'src/media/images/mini_van.png',
-  'src/media/images/police.png',
-  'src/media/images/taxi.png'
+  ['src/media/images/car.png', nil],
+  ['src/media/images/ambulance.png', 'src/media/sounds/ambulance.wav'],
+  ['src/media/images/audi.png', nil],
+  ['src/media/images/black_viper.png', nil],
+  ['src/media/images/mini_truck.png', nil],
+  ['src/media/images/mini_van.png', nil],
+  ['src/media/images/police.png', 'src/media/sounds/police.wav'],
+  ['src/media/images/taxi.png', nil]
 ].freeze
 
 module ZOrder
@@ -46,12 +46,12 @@ def initialize
     @data = JSON.parse(File.read('src/data/data.json'))
     @is_sound_enable = @data['config']['sound']
 
-    @current_state = @states[@state].new(main:self)
+    @current_state = @states[@state].new(main: self)
   end
 
   def update
     if @state != @last_state
-      @current_state = @states[@state].new(main:self)
+      @current_state = @states[@state].new(main: self)
       @last_state = @state
     end
     @current_state.update
@@ -65,11 +65,11 @@ def button_down(id)
     @current_state.button_down(id)
   end
 
-  def play_sound(_song, _loop = false)
+  def play_sound(_song, _loop = false, _volume = 1, _speed = 1)
     if _song.is_a? Gosu::Song
       _song.play(_loop) if @is_sound_enable
     else
-      _song.play if @is_sound_enable
+      _song.play(_volume, _speed, _loop) if @is_sound_enable
     end
   end
 
diff --git a/src/media/sounds/ambulance.wav b/src/media/sounds/ambulance.wav
new file mode 100644
index 0000000..09231f5
Binary files /dev/null and b/src/media/sounds/ambulance.wav differ
diff --git a/src/media/sounds/police.wav b/src/media/sounds/police.wav
new file mode 100644
index 0000000..6f799d3
Binary files /dev/null and b/src/media/sounds/police.wav differ
diff --git a/src/menuState.rb b/src/menuState.rb
index 85e570b..95e4bd2 100644
--- a/src/menuState.rb
+++ b/src/menuState.rb
@@ -1,5 +1,5 @@
 class MenuState < State
-  def initialize(options={})
+  def initialize(options = {})
     super options
     @font = Gosu::Font.new(25, name: 'src/media/fonts/NeedforFont.ttf')
     @options = [
diff --git a/src/player.rb b/src/player.rb
index a725992..919499a 100644
--- a/src/player.rb
+++ b/src/player.rb
@@ -1,8 +1,10 @@
 class Player
-  attr_reader :score
+  attr_reader :score, :song
+  attr_accessor :sample
 
-  def initialize(animation)
-    @animation = animation
+  def initialize(animation_file, song_file)
+    @animation = Gosu::Image.load_tiles(animation_file, 140, 140)
+    @song = Gosu::Sample.new(song_file) if song_file
     @x, @y, @angle = 0.0
     @score = 0
     @vel = 1.0
@@ -57,7 +59,7 @@ def collision?(cars)
   end
 
   def draw
-    image = @animation[Gosu::milliseconds / 100 % @animation.size]
+    image = @animation[Gosu.milliseconds / 100 % @animation.size]
     image.draw_rot(@x, @y, ZOrder::Player, @angle)
   end
 end
diff --git a/src/racing.rb b/src/racing.rb
index 13fcec6..215ee95 100644
--- a/src/racing.rb
+++ b/src/racing.rb
@@ -1,7 +1,7 @@
 require_relative 'main'
 
 module Racing
-  def Racing.open
+  def self.open
     window = MainWindow.new
     window.show
   end
diff --git a/src/state.rb b/src/state.rb
index f8d275d..04f069d 100644
--- a/src/state.rb
+++ b/src/state.rb
@@ -1,5 +1,5 @@
 class State
-  def initialize(options={})
+  def initialize(options = {})
     @main = options[:main]
   end
 
@@ -11,7 +11,7 @@ def draw
     raise NotImplementedError, 'This is not implemented!'
   end
 
-  def button_down(id)
+  def button_down(_id)
     raise NotImplementedError, 'This is not implemented!'
   end
 end