i have seen a few crazy cars at school in the parking lot. I saw an old beat up jeep cherokee, like a 1994 it had dents and hella dirty, but then you look right above the rear view and you see two little LEDS, hard to see unless your up close when they are off, or if they are on you cant miss them.
I swear here in SAC, they have all kinds of cars. I have seen intrepids, ford expeditions, ford vic, mustang, camaro (of course), excursion, ford contour etc etc... new jeep commander and a pontiac (not sure if it was a grand prix or grand am it flew by way too fast).
If you know where to look for the lights you can spot them most of the time. They are getting really good at hiding the lights in diff places though...sneaky I tell ya