The GPS goes on the dash, the tiny trak, HT, and battery go in the passenger door cup holder. Got a little tiny MFJ 2m mag mount antenna. Thats the whole tracker system! Here was my busy day of driving yesterday.
SoCal has pretty darn good APRS digipeater coverage. You can see that from Chino Hills (swap meet, more later!) I like to backtrack the 71 back to the 60 to get back to the 57, hate the 91 traffic, even on a Saturday morning.