General Motors and Chysler want another $21.6 billion:

General Motors (GM) and Chrysler, both operating in a state of virtual bankruptcy with the federal government overseeing their restructuring, said Tuesday that they will need an additional $21.6 billion in emergency loans — $5 billion for Chrysler, the rest for GM.

In return, they promised the government, they will slice even more people and plants to cut costs, while still investing to develop and market fuel-efficient vehicles in the next two years that will bring wary buyers back to their showrooms. That would generate the revenue they will need to repay government loans.

The additional loan amounts are detailed in plans the car companies were required to file with the federal government Tuesday to avoid having to immediately repay the $17.4 billion in emergency loans they were granted in December — $4 billion for Chrysler, the rest for GM.