Since Mac mini is pretty new and is the first mac small enough to fit everywhere in your car, the development of iDash like software is probably still under development. If you go through the past discussions of this forum or do a search on google, you can find related posts.
Most of the features you mentioned are already supported by OS X or 3rd party software. The only missing link is iDash. I also want to put a Mac mini in my car and have been using T-mobile's GPRS service and an old Garmin eMap with my iBook. Garmin eMap is pretty ancient now and uploading maps is still a headache on both a pc and a mac, so if I manage to put a mac mini in my car, I'll just reuse the eMap as a receiver.
To do everything you mentioned, I'll need
1. my eMap and the USB-to-serial cable
2. power source, either a dc-to-ac inverter or dc-to-dc transformer. I have an iGo jiuce and I'm trying to see if it works with Mac mini.
3. a touch screen
4. a good bluetooth headset for voice command
5. Mac mini with built-in wi-fi and bluetooth
Originally Posted by dazuck