I dont have this, but I highly recomend a laser jammer like the Blinder Xtreme or Laser Interceptor. It is %100 garrunteed against laser. The way you use it is like this: Say your driving along and all of a sudden your laser jammer's little LED light starts blinking and beeping, meaning that its being hit and is now jamming the cops laser beam, what you do is IMMEDIATLY slow down and as soon as you do that turn the laser jammer system off with the off switch that comes with it. By doing this, not only did you jam his laser when he was gunning you while you were speeding, but no your going normal speed and your system is off so when he tries gunning you again he gets a nice normal speed and probably thinks that he aimed wrong or that something interfered. If you leave the system on all the time, then you'll have problems, especially in cali where laser jammers are illegal. He will know that something is up when he sits there gunning your car and getting no reading. These jamming systems usually have two laser intercepting boxes that are about the size of a pack of cigs. They are mounted somewhere near your front plate or yout headlights, those are the locations that cops aim for. These systems run from around 400- 700 bucks and need to be wired and installed by pros, unless your good with running wires and drilling holes in dashes for switches. Everything you need to know about defense against lasers and radar can be found at
www.radarbusters.com and
www.guysoflidar.com