[kh99]

You don't have to change it to POST, just do something like this:

if($_REQUEST['do'] == 'delete_vehicle') {
echo "HOLY CRAP - DELETING VEHICLE";

$vbulletin->input->clean_gpc('r', 'id', TYPE_INT);
$id = $vbulletin->GPC['id'];

...and then next you'll probably want to make sure $id is actually set to a valid id, or at least is an integer >= the min id.