Toyota won't necessarily go down the tube like GM did. First, GM has pretty much shown everyone what NOT to do when you're #1. Second, Toyota has already acknowledged what kills large companies, and they are already taking measures to prevent it. And third, GM's quality didn't fall because of their size, it fell because they just didn't care about what they built. If GM can improve their quality while still being large, then there is no reason why Toyota can't maintain theirs.