Firework Suicide?

Deliberate?

• Authorities now know what happened on the Eisenhower Expressway last Thursday, leading to a bomb squad response and shutting down the interstate for hours.

  It was a firework mortar that went off inside the SUV being driven by 47-year-old Jorge Vaca from west suburban Cicero. A senior law enforcement official with direct knowledge of the case told NBC Chicago the fireworks rocket was ignited inside Vaca's vehicle and shot into his chest.

  It wasn't a bomb, and nobody did it to him, they said. The question is, still, why did it happen?

  Heavy fireworks are supposed to be blown off in open spaces - for obvious reasons - or into the sky, well away from people.

  But that is not what happened inside the SUV being driven westbound on the Eisenhower Expressway.

There were also a bunch of reports regarding shell casings scattered around the crime scene, but seeing as how it's the Ike, what neighborhoods it runs through and what happens there on a daily basis, these were probably just left over from one of the usual eight or ten weekly shootings