article_snippet.sent: Scroll down for video .
article_snippet.sent: A 'proof of concept' presentation for advertising executives is in the works already, ABC confirmed to DailyMail.com.
article_snippet.sent: Details of The episode were first reported by The Hollywood Reporter.
article_snippet.sent: It's Always Sunny in Philadelphia
highlights_snippet.sent: Bill Prady has written a pilot episode to pitch to advertisers .
  
highlights_snippet.sent: Filming will start in Burbank, California, next weekend .
  