I should also clarify, with GM equity was not part of the deal until the government bailout of GM was to be lost in bankruptcy; whereby the deal was changed since GM owed billions still and tried to shed it as a freebee.
Normally they would have repaid back over a period of years had bankruptcy not occurred and incurred another "bailout" on the same company.
Actually, GM via warrant sales, paid back all but about $10 B of their approx. $50 B bailout. I have little respect for their failure to pay back the balance, although the government made the call to excuse the balance for some rationale I will never embrace.
I believe previous bailouts at "the New Chrysler" in the Iacocca days and the Boeing collapse involved some equity backstop, but I wouldn't bet my life on it.