It's a battery hog, but your car probably has a cigarette lighter, and the TomTom kit has a power adapter to plug into it.
GPS is a memory hog too, but plugging into the car charger might actually negate the draining of both the GPS and the Bluetooth. Also, many states are banning the use of cellphones without hands-free devices.
Something to think about before you poo-poo the idea.
the point is, I would have to go into settings and turn on bluetooth every time I got in my car, then go back into settings and turn it off every time I get out.
I sure as hell am not one of those Jackasses with a bluetooth ear pieces.
When will those irritating people realize that nobody is impressed.