The whole point of the bailout was to prevent a systemic collapse of the US economy. A GM failure would have probably caused losses upwards of 105 billion dollars of lost tax revenue (http://money.cnn.com/2013/12/09/news/companies/gm-bailout-stock-sale/), which is paltry in context of the direct loss of 10 Billion.
The treasury would have had to sold it at 53 USD to break even on the stock. Today's price is around 41 USD. I don't think it would be unusual to see a move closer to 53, as long there is no major calamity in the general economy or through the performance of GM.