รบกวนทุกท่านหน่อยคะ เลือกค่าจาก list menu ไม่ได้ ผิดตรงไหนเอ่ย?

echo '<pre>';
print_r($_POST);
echo '</pre>';

<form method="post" action="" name="s1" id="s1">
	<select name="s" onchange="s1.sel.value= this.value">
		<option value="111">111</option>
		<option value="222">222</option>
	</select>
	<input type="text" name="sel"  />
</form>

<option value="ตรงนี้ดูว่ามีค่ามารึเปล่า">111</option>

<option value="<?=$result["value"];?>"><?=$result["car_title"];?></option>

<option value="test"><?=$result['car_title'];?></option>

<form method="post" action="" name="s1" id="s1">
	<select name="s" onchange="s1.sel.value= this.value">
		<option value="111">111</option>
		<option value="222">222</option>
	</select>
	<input type="text" name="sel"  />
</form>

<form method="post" action="" name="s1" id="s1">
			<?
                            $sql= "SELECT * FROM tbl_car";
                            $query = mysql_query($sql) or die ();
                            ?>
                            <select name="s" onchange="s1.sel.value= this.value">
                            <?
                            while($result = mysql_fetch_array($query))
                            {
                            ?>
                            <option value="xxx"><?=$result["car_title"];?></option>
                            <?
                            }
                            ?>
                            </select>
                            <input type="text" name="sel"  />
</form>

  <table width="100" border="1" class="style1">
				<tr>
				 <th scope="col"><p>ข้อมูลรถ</p>
				<table width="100" border="1" class="style1">
				  <tr>
					<th scope="col"><div align="center">ยี่ห้อ/รุ่น</div></th>
					<th scope="col"><div align="center">จำนวน</div></th>
					<th scope="col"><div align="center">วันที่จอง</div></th>
					<th scope="col"><div align="center">วันที่รับรถ</div></th>
				  </tr>
				  <tr>
					<td><div align="center">
                   
							<?
                            $sql= "SELECT * FROM tbl_car";
                            $query = mysql_query($sql) or die ();
                            ?>
                            <select name="service" id="service">
                            <?
                            while($result = mysql_fetch_array($query))
                            {
                            ?>
                            <option value="<?=$result["value"];?>"><?=$result["car_title"];?></option>
                            <?
                            }
                            ?>
                            </select>
                               </div><input type="text" value="<?php print $arrData[0][15];?>" id="type" name="type"/></td>
					<td><div align="center"><input type="text" value="<?php print $arrData[0][6];?>" id="type" name="type"/></div></td>
					<td><div align="center"><input type="text" value="<?php print $arrData[0][13];?>" id="type" name="type"/></div></td>
					<td><div align="center"><input type="text" value="<?php print $arrData[0][7];?>" id="type" name="type"/></div></td>
				</tr>
			</table>

					<?
                            $sql= "SELECT * FROM tbl_car";
                            $query = mysql_query($sql) or die ();
                            ?>
                            <select name="service" id="service">
                            <?
                            while($result = mysql_fetch_array($query))
                            {
                            ?>
                            <option value="<?=$result["value"];?>"><?=$result["car_title"];?></option>
                            <?
                          }
                            ?>
							<?  print_r($result); exit;?>
                            </select>

<form method="post" action="" name="s1" id="s1">
			<?
                            $sql= "SELECT * FROM tbl_car";
                            $query = mysql_query($sql) or die ();
                            ?>
                            <select name="s" onchange="s1.sel.value= this.value">
                            <?
                            while($result = mysql_fetch_array($query))
                            {
                            ?>
                            <option value="xxx"><?=$result["car_title"];?></option>
                            <?
                            }
                            ?>
                            </select>
                            <input type="text" name="sel"  />
</form>

<?php
	$result = array('111','222','333','444','555','666');
?>

<form method="post" action="" name="s1" id="s1">
	<select name="s" onchange="s1.sel.value= this.value">
	<?php foreach($result as $values):?>
		<option value="<?=$values?>"><?=$values?></option>
	<?php endforeach;?>
	</select>
	<input type="text" name="sel"  />
</form>