Nice. From someone who is unwilling, or unable, to post any sort of numbers whatsover, I "work" numbers by merely posting them. As for your sub-assembly canard, if the remaining workers can build a vehicle more quickly by assembling sub-assemblies, what about the workers who built the sub-assemblies in the first place? Their jobs are off-shored, remember? In other words, they lost their jobs. In other words, their productivity fell to zero.
GM is trying to raise their productivity as a corporation. the workers no longer employed by them, no longer count in their statistic. they now hold a job someplace else in the economy, as greeters for walmart, or no longer work at all because they have retired or they sell crap on EBAY - and have fallen off the stats.
either way, my example is what real companies are really doing to use offshore labor to increase their productivity. you can call it a canard if you like.