same thing happend to a friend of mine with the red lights that take your picture if you go through them...

The police mailed him a bill. and they supplyt he picture with them. Dont know who ran the plates but they had the first 3 letters correct. then the last numbers were reversed.
It happend about 2 towns over... and it was a short black woman driving... my friends about 6'2, 300 lbs... and whiter than chalk...

Good thing the system works.