Personally, I would have my Chevy HHR Station Wagon rear door & quarter panel windows tinted a little darker, then add the curtain for safe measure. I have rope lites that would be attached to the ceiling. They are really bright too. The original Youtube video author described a similar lighting set up in his SUV, hence, the very reason why he put up a black out curtain.<div>Besides that, the LEOS would look in the vehicle anyway, even after knocking on your window at 3:00 a.m. regardless of a curtain being in there or not. </div><div>Passersby would prolly think it's just a dark-tinted window anyway & would likely not even see anything.</div>