What are you smoking, valiente? I can't believe that rumor is widespread, though it doesn't cost anything to dream.
When I came here in 1986, the rate of exchange was about RD$2 to US$1. We have had periods of relative stability, interspersed with periods of inflation, almost always brought on the by government's borrowing and printing money.
We may have another period of stability eventually (and hopefully we will), but like others, this is likely to be closer to 40 than 20.