Voice SMSing

  I'm sure its not far away but a voice recognition sms, in aus the 8210 nd upwards have voice recognition for dialing why can't we put this into sms?? My girlfriend hates using the autospell function and it takes her forever to write a message.
  If this was available i know i'd buy one!! leaves me more time to what i want. It doesn't even have to be text but maybe it sends a short recording to the other phone???