diff --git a/experiment/drive_a_car.html b/experiment/drive_a_car.html
index 5046467..acd512f 100644
--- a/experiment/drive_a_car.html
+++ b/experiment/drive_a_car.html
@@ -1,11 +1,11 @@
 <!doctype html>
 <html><head>
-		<title>Drive A Car (2D) (1005 bytes script)</title>
+		<title>Drive A Car (2D) (984 bytes script)</title>
 		<meta charset="utf-8" />
 	</head>
 	<body style="margin:0;">
 		<div>
-			Drive A Car (2D) (1005 bytes (0.98KB) script)<br/>
+			Drive A Car (2D) (984 bytes (0.96KB) script)<br/>
 			Use arrow to navigate left or right<br/>
 			<i>or touch left side or right side on screen</i>
 		</div>
@@ -17,6 +17,6 @@
 			document.body.clientWidth;
 		</script>
 		<script>
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+var f=50/3,g=t=y=0,j=k=1,m=[0,0,0,0,0],h=500,w=800,p=w/8,o=w/4,r=h/5,e=250;for(n in a)a[n[0]+n[n.length>>1]]=a[n];setInterval(function(){if(j<1){return;}with(g++,a){function z(n){a.fillStyle='#'+n;}if(t>=e){t-=e;y=(y>0)?0:1;for(var A=4;A>0;)m[A]=m[--A];if(m[0]=y<1?Math.random()*3+.5|0:0,m[4]===k){j=0;font='20px sans-serif';fT('refresh for new game',w/3,h/3*2);z('f00');font='90px sans-serif';fT('crashed',w/3,h/2);return;}}t+=f;z('5e1');fR(0,0,w,h);z('b93');fR(p,0,w/4*3,h);z('6ee');fR(p+(k-1)*o,4*r,o,r);z('aaf');for(var i=0;i<5;i++){m[i]===0?0:fR(p+(m[i]-1)*o,(i-1+t/e)*r,o,r);}z('000');font='12px sans-serif';fT(g+'m',w/32,h/8)}},f);window.onkeyup=function(e){e=e.keyCode;switch(e){case 37:s(-1);break;case 39:s(1);break;}};function s(a){a>0&&k<3&&k++,a<0&&k>1&&k--}function v(x){var u=window.innerWidth,q=u*.3;x<q?s(-1):x>u-q&&s(1)}document.addEventListener("touchstart",function(e){v(e.touches[0].clientX);},!1);document.addEventListener("click",function(e){v(e.clientX);},!1);
 		</script>
 </body></html>
