Tarp both directly and indirectly included the autos. Directly, because the auto bailout was funded under tarp, and indirectly because the way cars are sold - through loans, was about to be a broken process. if you remember, companies were no longer processing orders of auto parts companies unless they were paying in cash, for fear they might go under. The same situation happened in the banks. if the autos had gone, just that alone would have added another 2 million to unemployment in a month. Ford, the healthiest of the autos would have gone under too - as the companies that made GM and Christler's parts also made theirs. This alone would have destroyed the world economy for decades, let alone the financials all going kaput all at once.
there were aspects of TARP that could have been implemented better, such as stipulations on c suite bonnuses, but overall TARP was needed or else we would be in a really bad place right now.