Seen on I287 east - by the Garden State Parkway exit - travelling in the left lane. Around 5:00 pm Wednesday Feb 12.
A black 540 rebadged as a 528 (can't make that exhaust look different)
With blue reflectors on the rear bumper - police type third brake lights inside the rear deck - several antenna, and most notable of all - a silver search light mounted through the driver's A pillar.
Windows heavily tinted so - I could not get a look at the driver.
Don't know what it was all about - but the notion that highway patrol may actually be riding in a black 5 series was enough to jolt me.
If it wasn't - then - it was the most abused looking 5 series I ever saw - wish I had my camera.