i've wanted to do this...i'm considering it again...

Source -
 http://www.crowdcontrolstore.com/portableautofloormat.aspx?gclid=CIiQ8NGcmq8CFQTd4AodbhV7dA

http://www.vseal.com/concrete_sealer/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=39&category_id=8&option=com_virtuemart&Itemid=31&vmcchk=1&Itemid=31

http://www.vseal.com/concrete_sealer/index.php?option=com_content&view=article&id=8&Itemid=9