/**** 
* Classes
****/ 
// Bus class
var Bus = Container.expand(function () {
	var self = Container.call(this);
	var busGraphics = self.attachAsset('bus', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// Assets will be automatically created and loaded during gameplay
// Car class
var Car = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// Car2 class
var Car2 = Container.expand(function () {
	var self = Container.call(this);
	var car2Graphics = self.attachAsset('car2', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// Left Move Button class
var LeftMoveButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('moveButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function () {
		player.moveLeft();
	};
});
// Life class
var Life = Container.expand(function () {
	var self = Container.call(this);
	var lifeGraphics = self.attachAsset('life', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
// Pause/Play Button class
var PausePlayButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('moveButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isPaused = false;
	self.update = function () {
		if (self.isPaused) {
			buttonGraphics.tint = 0x00ff00; // Green for play
		} else {
			buttonGraphics.tint = 0xff0000; // Red for pause
		}
	};
	self.down = function () {
		self.isPaused = !self.isPaused;
		LK.setPaused(self.isPaused);
	};
});
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lane = 2;
	self.lives = 3;
	self.moveLeft = function () {
		if (self.lane > 1) {
			self.lane--;
			self.x = self.lane * 512 - 256;
		}
	};
	self.moveRight = function () {
		if (self.lane < 4) {
			self.lane++;
			self.x = self.lane * 512 - 256;
		}
	};
	self.loseLife = function () {
		self.lives--;
		lives[self.lives].destroy(); // Remove one life image
		lives.splice(self.lives, 1);
		if (self.lives <= 0) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	};
});
// Right Move Button class
var RightMoveButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('moveButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function () {
		player.moveRight();
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 // Init game with black background
});

/**** 
* Game Code
****/ 
// Set lines as a background image
var background = game.attachAsset('lines', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
var player = game.addChild(new Player());
var pausePlayButton = game.addChild(new PausePlayButton());
pausePlayButton.x = 2048 - 100; // Position the button at the top-right corner
pausePlayButton.y = 100;
var leftMoveButton = game.addChild(new LeftMoveButton());
leftMoveButton.x = 100; // Position the button at the bottom-left corner
leftMoveButton.y = 2732 - 100;
var rightMoveButton = game.addChild(new RightMoveButton());
rightMoveButton.x = 2048 - 100; // Position the button at the bottom-right corner
rightMoveButton.y = 2732 - 100;
player.x = 2 * 512 - 256; // Set player's initial x position to the third lane
player.y = 2400;
var cars = [];
var buses = [];
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var lives = [];
for (var i = 0; i < 3; i++) {
	var life = game.addChild(new Life());
	life.x = (i + 1) * 60; // Position the life images at the top-left corner
	life.y = 60;
	lives.push(life);
}
function spawnVehicle() {
	var lane = Math.floor(Math.random() * 4) + 1;
	var vehicle;
	if (Math.random() < 0.33) {
		vehicle = new Car();
		cars.push(vehicle);
	} else if (Math.random() < 0.66) {
		vehicle = new Car2();
		cars.push(vehicle);
	} else {
		vehicle = new Bus();
		buses.push(vehicle);
	}
	vehicle.x = lane * 512 - 256;
	vehicle.y = -100;
	game.addChild(vehicle);
}
// Removed game's down event handler
game.update = function () {
	for (var i = cars.length - 1; i >= 0; i--) {
		if (cars[i].intersects(player)) {
			player.loseLife();
			cars[i].destroy();
			cars.splice(i, 1);
			continue;
		}
		for (var j = i - 1; j >= 0; j--) {
			if (cars[i].intersects(cars[j])) {
				cars[j].speed = cars[i].speed;
			}
		}
		for (var j = buses.length - 1; j >= 0; j--) {
			if (cars[i].intersects(buses[j])) {
				cars[i].speed = buses[j].speed;
			}
		}
		// Despawn the car if it is off-screen
		if (cars[i].y > 2732) {
			cars[i].destroy();
			cars.splice(i, 1);
			continue;
		}
		cars[i].update();
	}
	for (var j = buses.length - 1; j >= 0; j--) {
		if (buses[j].intersects(player)) {
			player.loseLife();
			buses[j].destroy();
			buses.splice(j, 1);
			continue;
		}
		// Despawn the bus if it is off-screen
		if (buses[j].y > 2732) {
			buses[j].destroy();
			buses.splice(j, 1);
			continue;
		}
		buses[j].update();
	}
	if (LK.ticks % Math.max(10, 60 - Math.floor(score / 10)) == 0) {
		spawnVehicle();
		score++;
		scoreTxt.setText(score);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -8,13 +8,10 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 3;
-	self.isPaused = false;
 	self.update = function () {
-		if (!self.isPaused) {
-			self.y += self.speed;
-		}
+		self.y += self.speed;
 		if (self.y > 2732) {
 			self.destroy();
 		}
 	};
@@ -27,13 +24,25 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 5;
-	self.isPaused = false;
 	self.update = function () {
-		if (!self.isPaused) {
-			self.y += self.speed;
+		self.y += self.speed;
+		if (self.y > 2732) {
+			self.destroy();
 		}
+	};
+});
+// Car2 class
+var Car2 = Container.expand(function () {
+	var self = Container.call(this);
+	var car2Graphics = self.attachAsset('car2', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 4;
+	self.update = function () {
+		self.y += self.speed;
 		if (self.y > 2732) {
 			self.destroy();
 		}
 	};
@@ -74,14 +83,8 @@
 	};
 	self.down = function () {
 		self.isPaused = !self.isPaused;
 		LK.setPaused(self.isPaused);
-		for (var i = 0; i < cars.length; i++) {
-			cars[i].isPaused = self.isPaused;
-		}
-		for (var i = 0; i < buses.length; i++) {
-			buses[i].isPaused = self.isPaused;
-		}
 	};
 });
 // Player class
 var Player = Container.expand(function () {
@@ -173,11 +176,14 @@
 }
 function spawnVehicle() {
 	var lane = Math.floor(Math.random() * 4) + 1;
 	var vehicle;
-	if (Math.random() < 0.5) {
+	if (Math.random() < 0.33) {
 		vehicle = new Car();
 		cars.push(vehicle);
+	} else if (Math.random() < 0.66) {
+		vehicle = new Car2();
+		cars.push(vehicle);
 	} else {
 		vehicle = new Bus();
 		buses.push(vehicle);
 	}