Dollar shortage? Not as long as the ink supply holds out.
There is a funny thing about cash.
Most people use very little of it.
It has been actively discouraged for 40 years. We no longer have any big bills. A hundred dollar bill has less value than a 20 dollar bill did when we had $1,000 bills in circulation.
A friend got a hot deal on a piece of equipment for his rental business, but it had to be in cash. He could not get $20K from his bank! It took him a week to get it! They were shocked and amazed that he needed a mere $20K in cash!
This tells me that we are not up to printing and distributing large amounts of cash quickly. I suspect at least a 3 to 6 month lag *after* someone makes the decision to print the money.
Therefore, it is likely that cash will be king for some period of time.