It's worth noting that here in Australia cars have no such method, and you are not allowed to put a car seat in the front seat. Equally when travelling as best

It's worth noting that here in Australia cars have no such method, and you are not allowed to put a car seat in the front seat. Equally when travelling as best I can tell all European cars have a method to do this and you can install in the front seat. So this probably varies by country, but I am not sure which countries have what or where the USA is. Without specifically checking I imagine that the Australian Design Rules basically wouldn't allow them to add the option even if they wanted to - if I had to guess because you're not allowed to have such a disable button (which you could argue could also be dangerous in some cases if pressed or used when it shouldn't be).