For a little more than $200 you can get a handheld/suction mount unit
that has the entire USA loaded into it, voice prompts, turn-by-turn
directions, auto zoom in/out as you move from city to highway, etc. All
the travel services/phone numbers/etc are there and can generally be
updated.
If you need an area larger than that, you can load the maps... but I
suspect if that is the case, then you probably aren't driving a 30+ year
old car.
I don't think the laptop/gps/power inverter combo is a viable option any
longer. (And with Microsoft no less! Pull over and reboot the GPS!)
Jim Muller wrote:
> To my mind there have always been two schools of thought on this
> subject (not counting using a unit built into the car, which doesn't
> work in an unmodified LBC dashboard). One school says use a hand-
> held or portable GPS unit, using loadable maps, possibly with routes
> worked out from an online site like Mapquest. The alternative, and
> my own preference, is to use a laptop PC-based map program that
> reacts with an attached GPS unit.
>
> A PC-based map program gives you convenient access to maps for areas
> you may not have loaded into a smaller unit. It can calculate
> fastest or shortest routes. It lets you plan routes, look at
> alternatives, check driving times, etc. It can provide travel
> services, phone numbers, etc. The map display can be large and
> detailed. The PC resources let it do voice synthesis to announce
> upcoming turns, and voice recognition to respond to commands.
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