This rally is going towards its logical conclusion, the price has doubled in about 2 weeks from $37, prior doubling took 6-7 weeks, from $19, next one to $148, would happen in 3-5 days, unless the spell is broken...
Remember, it is different this time, and normal rules of monetary system values don't apply to bitcoins, the fact is that all the other currencies are currently in hyperinflation vs bitcoins...