From "GM Bailout Will Cost Taxpayers Billions" by Investor's Business Daily:
...GM on Wednesday said it will buy back the 200 million share government stake for $5.5 billion, or $27.50 a share.
The break-even point on the government's total holdings was $53 a share. But now, with $20.9 billion in taxpayer funds left to pay off from 300 million shares, the break-even point has risen to $69.72 a share.
In other words, at current prices, taxpayers are sitting with a loss of 61%, or nearly $15 billion, on their investment.