I am having a serious problem with my 1993 Subura Legacy.  As far as I can
tell, on random occasions, the engine turns off while I am driving.
Starts fine, I'm driving down the road, all of a sudden all the lights
come on(check engine, brake light, ect) and the steering wheel won't work,
breaks won't work, whole engine is off.  I pull over, put it in park, and
the engine starts back up just fine.  I've poked around at different
issues, can't seem to pinpoint the right one, I'm thinking it has to be a
sensor or some computer component.  Anyone have any idea what this could
be?  Any help would be appreciated.  Thanks.