They get the technology, tools, market channels, know how they need and
gradually move their own people in and are in no hurry and get this relatively
cheep because they own so many dollars already.
When Saab was taking their last breadth the Chinese offered to come in with
money and take over 50% but then they just played the waiting game and in the
end they got 100% for less than they offered first.
To take over GM will be even easier and they are already taking the steps needed.