I have never reacted so fast in my life, but he still got me clocked at the full speed I was driving. LIDAR is so fast you don't have a chance, even if your detector will pick it up it doesn't matter. I guess its time to save up for a laser shifter.
You'll also find that driving with a radar detector makes you lazy. You lose the instinct to scan for cops, and you become over-reliant on your detector. At least thats what happened to me.