Im stuck on what to do for my car set up, i would like to use the iphone as a satnav with the tomtom application and car kit, but i also use my phone quite alot driving with bluetooth through the stereo i have.
problem im noticing whilst using the satnav is if i answer a call the app will close and just have the answered call display up rather than the route i am meant to be driving (oops, missed the turning on junction 28!!

)
then i also have the issue of trying to play music aswell, i guess i can live without having the phone as a music player for the car if i can get satnav / phone calls to work together...
anyone else have these problems, trying to decide on what car setup to have but dont want to fork out £100 on the tomtom car kit if i keep getting the call issues.
EDIT:: could it be a case of buying a complete new double dinn head unit to replace my sony one currently that ford fiesta zetec 08 uses as standard