we know there was a gun, anderson. >> appreciate it. a source familiar with the investigation tells us faisal shahzad waived his miranda rights and has been talking to officials since his arrest. he's still talking tonight apparently. as joe said, it took less than 54 hours for law enforcement officials to track him down. he left behind those clues. the first was discovered underneath that suv abandoned in times square. drew griffin takes us up close. >> reporter: the moment the danger was over, the wires removed, one detective looked underneath the nissan path finder and wrote down the clue fay sal shahzad did not know he left behind. etched under the engine block, the vehicle's identification number, the same vin number he removed from the dashboard from a source familiar with the investigation. that number led to a registration in connecticut and with it, sources tell cnn, the name and address of the owner, whose daughter was selling the