As they're driving away, have a cop stop them for a typical traffic stop. Don't tell them it's because their taillight is out, just stop them.
I did that on my group once in the Troll's "RV From Hell" Ares Roadmaster (The commercial version of the Citymaster that's normally used for hauling high-risk cargo, and he had converted into an RV. I'm considering a few things based on this, actually.). After the Lone Star Cops (I ran in 2070) saw he was a Troll, their typical response happened, and the primary officer immediately went for the Shotgun while his partner went into the trunk for the M23 Assault Rifle.
Meta Profiling only. License, registration, SIN check, all that. Then let him off with a warning about the tail light. All the while everyone is mentally thinking (And saying out of character), "Don't look in the back, don't look in the back, don't look in the back.", as all their illegal gear was in the back, and a thin curtain between the driver's section and the back was all that prevented a "Plain Sight" rule from kicking in.
They played it Bogart, and was able to get out of the situation, but it could have ended quite badly.
Now, if their vehicle is missing parts due to being hit by Assault Cannon rounds or is pockmarked with bullet holes, then more explaining will be needed. But this is a Dystopian Society, "Sorry Officer, we drove past the Spikes and the Ancients going at it and caught some stray fire. We're trying to get to a Pay and Spray for repairs right now." with a good Con roll, maybe a Data Search roll to find out which go-gangs are going at it at the moment in case the officers check on the Gang Report themselves...
A police stop is fun in so many ways.
