You could probably power and wire a head unit and speakers separately, but that's kind of beside the point of this thing. It is an option after all.
ya, that'd work, it'd be a major pain in the arse, but if somebody really wanted to do it, that could be done..
so far it looks ok, but as it was said earlier, microsoft speech recognition has never really be perfect unless (watching a commercial on it right now, sorry for interupting, haha) you have flawless speech
we had OnStar in our '03 Yukon XL and it sucked... we had it for phone and such, and whenever you'd say 2 it'd say 0 no matter who said it, i know this isnt really the same thing, but my point was we have a ways to go before speech recognition can be counted on
i'd just like to see it in action though, it'd be cool either way