"met with dismay by unions" what a joke. They have created most of the problems in not only the car industry, but most others as well by wanting continual wage rises, that then push up prices of goods, which then result in demands for more pay.
Senior management should be the 1st place to cut back in. One top ender would make more than 4 or 5 workers. Always the way, kick the worker.
But, it was going to happen. After Ford made the decission, it was only a matter of time before GMH followed.