I am not sure if would actually work, but I am profoundly impressed about how life mirrors one of the most popular web-comics on the web:
Typical speed camera traps have built-in OCR software that is used to recognize license plates. A clever hacker decided to see if he could defeat the system by using SQL Injection…
The basic premise of this hack is that the hacker has created a simple SQL statement which will hopefully cause the database to delete any record of his license plate. Or so he (she?) hopes. Talk about getting off scot-free!
I do not know if it will work, but I am profoundly amused.