Some kind of vehicle, maybe bomb disposal vehicle?
http://www.google.com/imgres?imgurl=http://www.southdacola.com/blog/wp-content/uploads/2009/04/bearcat_ptla.jpg&imgrefurl=http://www.southdacola.com/blog/2009/04/remind-me-why-this-hunk-of-steel-is-more-important-then-fixing-our-roads/&h=322&w=445&sz=37&tbnid=gYwtk6WiYeBpXM:&tbnh=90&tbnw=124&zoom=1&usg=__lW-yJlYkYZu2oDnMz_V4SH_fjrE=&docid=YPRDbGfb1nOTMM&sa=X&ei=T9hxUefdGajh2QWnm4GoDA&ved=0CEsQ9QEwBA&dur=5095
