Our Explorer has it. It is mostly a non-issue and VERY easy to override when it is. If the engine cuts off I can't get my foot from the brake pedal to the accelerator fast enough for there to be any delay. If I want to keep the engine running I simply slightly release the brake as I'm slowing and it never cuts off. The only time it does bother me is in a lot of stop and go traffic where i have to stop at a stop sign at every intersection. Then I push one button and it stays on all the time.
The auto dimming headlights are more of a headache. But once again turning a knob 1/2" fixes that.
Time will tell, but the starters are supposed to last as long, or longer than conventional starters. We'll see.
