I wasn't going to bother with the Oracle but after a trips to Liverpool and Hampshire in the past two weeks and being stuck on motorways...... 
I've got a SAT NAV in my car that's coming at the end of the month and I must admit I was dissapointed to find out in a post I put up that the TM Oracle and SAT NAV aren't integrated.
Yes, this does mean that they will argue with eachother, not directly of course, but 1 of the 2 women living in the dash will direct you blindly to the jam, and the other will forewarn you of impending doom. If you deviate to avoid doom, the 1st woman will get very upset and confused and try her damnest to keep reminding you that you should turn around
As the SAT NAV has a manual "avoid area" function, I'm sure it is possible to interface the two units with some software and a PCB. I know a couple of people with these skills and I'm going to investigate. I think I can get my head round the software bit if I can find the deeper technical details of the two units on-line somewhere.
Wish me luck
