Chick in Alero passed me with a Cobra Rd. A few min later Ka blips started to show up. I assumed there was a DPS with 34.7 ahead. I saw the lights jump the median way ahead and this chick never ever slowed down or tapped her brakes. I knew her Cobra FAILED and she was a victim with a speed over 85 My distance from first alert was 2.3 miles. He was trigger happy and that Cobra seem to miss every I/O shot or it wasn't on.