code: function _build_object( game, x, y, speed ) {	
  
  	var car_asset = game.carAssets[parseInt(Math.random()*game.carAssets.length)]
  	var framex = car_asset.w * parseInt(Math.random() * car_asset.count);
  	
  	return {
  		collided: 0,
  		width: car_asset.w,
  		height: car_asset.h,
  		img: car_asset.img,
  		framex: framex,
  		pos: {
  			x: x,
  			y: y
  		},
  		speed: speed,
  		cleanup: function() {
  			if (this.bubble) {
  				this.bubble.remove();
  			}
  		},
  		update: function( t ) {
  			if (this.collided > 2  && !this.bubble) {
  				this.collided = 0;
  				this.bubble = $('<div class="bubble">'+BLURB_TBL[parseInt(Math.random()*BLURB_TBL.length)]+'</div>').appendTo('#area');
  				this.bubble.css({
  					left: this.pos.x - 30,
  					top: this.pos.y - 20
  				})
  				this.bubbleEnd = t + 1000;
  			} else if (this.bubbleEnd < t) {
  				this.bubble.remove();
  			} else if (this.bubble) {
  				this.bubble.css({
  					left: this.pos.x - 30,
  					top: this.pos.y - 20
  				})
  			}
  		},
  		clear: function( ctx ) {
  			ctx.clearRect( this.pos.x - 1, this.pos.y - 1, this.width + 1 , this.height + 1 );
  		},
  		draw: function( ctx ) {
  			ctx.drawImage( this.img, this.framex, 0, this.width, this.height,
  						   this.pos.x, this.pos.y, this.width, this.height );
  		}
  	}
  }
docs: Add car in game