Do you think that the price of a single Satoshi will be something like $1 one day? Or even more than that? Will there be fractions of Satoshis in the future like mSatoshis (Milli Satoshi)?
It depends on two things: what will happen with Bitcoin price and what will happen with USD in future. If USD stops beeing relevant FIAT (unlikely but not impossible) and BTC continues to grow it might be possible. But in my opinion it's not realistic.
Bitcoin will never replace the dollar from circulation in America, but it is easily in the future could oust the dollar as a reserve currency. This is the biggest nightmare of America. Perhaps in the future all the forces of the us financial system will be left to struggle with bitcoin.