You mentioned that almost any GPS receiver will work with the new street deck. I noticed in some of the movies that movement of the GPS is quite jerky and refreshes at about 1 Hz. Is this a limitation of the default GPS receiver, or is it a limitation of the software? If I plugged in one of those expensive Ublox or Tyco integrated dead reckoning GPS receivers, will it the jerkiness smooth out? Will the car's location be refreshed at a higher refresh rate? Or will Street Deck's GPS software be forever confined to jerky 1Hz refresh rates?