They're great when you have kids. My previous Lexus LX470 had one in the back of each (4) headrests, one in the the rearview mirror and one in the nav. pod played DVD's. One kid could be playing PS2, while another watching TV and another a DVD with headphones. Made for a nice quite drive for me. I still have them in 2 of my vehicles and my son's asked why there aren't any in the NSX. :biggrin: