Window etching is a good thing to have as additional theft deterrance for your Challenger.
However, do not pay the exorbitant prices charged by dealers. You can buy a kit, like I did, for only $29.99 and do it yourself. It is as easy as taping a stencil to the inside of your widow, dabbing it with a weak acid, and peeling the stencil away. You can do all 6 pieces of glass in 1 hour.
VINGUARD VIN Etching Kit - Do It Yourself VIN Window Etching Kit Vehicle Security System