Cancelling Your Celly Account The Hard Way

Two cars, for reasons undetermined, smashed their way through the plate glass of a cell-phone store on Chicago's Southeast side earlier today. Tragically, one person was killed and a number of the passengers were either thrown from the vehicles involved or crawled away from the wreckage before police arrived. Either way, an ugly situation. The question is, what caused it?

1 Killed After Cars Crash Into Phone Store [NBC5]

Related:
Is the Severed-Head Crash the New Brokeback Enzo? [Internal]