He's upset because it's important to him.
If this fails, it's going to dog him for his entire first term, and possibly cost him re-election before his first month in office is even over.
Now, on the flip side, that tells you how much he truly does believe this will work. I don't think it will, but it's obvious to me that Obama does. I personally think my right pinkie knows more about capitalist economics than his whole administration, but you gotta admire tha guy's self confidence!
Since I'm shamelessly throwing my opinion out there for all to see...
Does any of this sound like the typical Democrat track record? "I know, let's do up a solution that makes us look good, and by the time it all explodes, the republicans will be back in office and will take the blame!"