No, 10000 airplanes per year won't happen. Why? Because airplanes are
not like cars, disposable after 3 or 4 years. They stay around forever
due to good maintenance and being built well to begin with. There is
just not enough turnover to reach that kind of volume.

Even in their heyday in the 70's, Cessna took about 250 man hours to
assemble a 172. I don't know what the man hours are in say a Ford
Focus but I would be suprised if it was more than a tenth of that.
Airplanes are labor intensive to make and don't lend themselves to mass
production. If they did, someone smarter than me would be doing it
already.

Rick