Open up your wallet and take out a dollar. Look at it. It's just a piece of paper. That's all. It's a store of wealth because our government says it is. And what happens if everyone stops believing the government? At that point point that piece of paper becomes just a piece of paper - good for writing, maybe personal hygiene. Which is what happened in Zimbabwe.
With the upcoming passage of the spendulus package, our government is about to send money into the economy that won't create jobs or create more "wealth" - because printing more paper doesn't generate wealth. The result, as this OpEd in the WSJ details, will be inflation. Because foreign governments aren't going to be giving us their money (by buying our bonds) so we are going to have to print it. And printing more of it will devalue it. The result is inflation.