Rather than have a giant if statement that is used for page-specific css and javascript, use the $path_alias provided by Drupal

template.php

  // TODO: there are better ways to do this. needs research
  // maybe something like this: https://www.drupal.org/project/autoload_js
  $path_alias = drupal_get_path_alias($_GET["q"]);
  $theme_path = $base_url . '/' . drupal_get_path('theme', 'tesla_theme');

  /**
    * DESCRIPTION:
    * page-specific CSS added through this function based on the $path_alias
    * AUTHOR: eritchey@teslamotors.com
    */
  $page_level_CSS = array(
    '#tag' => 'link',
    '#attributes' => array(
      'href' => $theme_path . '/css/' . $path_alias . '.css',
      'rel' => 'stylesheet',
      'media' => 'all'
    ),
    '#weight' => '-99995',
  );
  drupal_add_html_head($page_level_CSS, 'page_level_CSS');