This is a link to the article of law saying that it is illegal to confiscate your license and license plate of your car. Even local city police or MMDA. 1991 pa ito and if you read this all the way and analyze these articles it says that it is still valid cos (correct me with the term if I'm wrong) proactive law..

http://www.lawphil.net/judjuris/juri...1023_1990.html

http://www.lawphil.net/judjuris/juri...2782_1991.html