OnStar is a cool system for any family. There is even the ability to unlock your door from Space, no kidding, so if you lock yourself out of your car you simply call a number and they unlock it from space. With this great technology and the fact it always knows where you are with GPS, that means the OnStar system could do much more, if it were designed to do so.
Recently a friend on a road trip in a mini-van had been thinking that when going up and down hills the engine had a tough time at the higher altitudes. Having Onstar of course makes drivers feel safer when traveling on road trips; for instance if you get caught in a snow bank collapse or small avalanche. As more people get GPS in their vehicles it will adjust traffic thru an area due to how the display is set on everyone