Here is a discussion about the dangers of the rear seats in the model x: https://forums.tesla.com/forum/forums/concern-about-head-injury-third-row-seating snip**the third row seats are clearly exceedingly dangerous for medium-tall passengers. it is just a matter of time (if it has not happened already) that someone is killed or suffers devastating neck injuries from this seating/roof design. the problem is that someone can sit 'comfortably' in that seat and think they are safe, but in even a minor frontal crash their forehead would strike the rear hatch-window-frame cross member, violently rotating the head backwards, breaking the person's neck. tesla 'cleverly' used the glass hatch roof to allow more headroom with a lower aerodynamic roof, but this just means people might sit in this seat who are too tall to survive there in even a minor frontal impact accident. tesla should have a disclaimer (height restriction?) about this issue.** the thread also discusses the danger to children in a booster seat. it appears that the authorities are permitting tesla to self regulate in these matters of safety. owners have the belief that tesla is the safest car in the world and that tesla can be trusted to do the right thing. i am of the opinion that such faith is not justified. please investigate to prevent someone being killed or rendered quadriplegic. thank you. concerned citizen.