In rec.autos.tech, on Wed, 11 Jul 2018 11:06:49 -0400, Ralph Mowery
wrote:

In article , NONONOmisc07
says...

I don't want another device. I just want a radio, which may or may not
have GPS. In order to judge whether to get GPS, I need to know how much
detail the map will have, but if the map is bad, that just means no GPS,
not that I would buy an additional device to have a better map.



The maps are usually very close from one GPS to the next if they are
updated.

I don't care too much for the radio, but do like being able to plug in a
USB drive into the audio system to play songs of my choice. You do not
need the GPS option for that.

Right. I do that too. But not from a port right in the radio. I have
to plug something into the cigarette lighter. Despite that it works,
that was another reason to get a new radio, but I twisted the thing 90
degrees and now I can see the buttons and it's pretty easy to replay a
song or skip to the next song.

I bought a 2017 Toyota and it came with sort of a GPS, but not really.
From what I get out of it, it seems that it has a map that works off my
cell phone.

Clever. I didn't have a specific method in mind, but I thought there
would be some 4th method by now. A shame it doesn't work better.

You start out with it and it calculates here you are and
which way to turn. If you get off the given route it still thinks you
are on it. So it is worthless.

Yes. I often see things that make me turn off the route.

They do make a true GPS for that car,but it just was not on the one I
bought.

I have a Garman with lifetime updates that I like to use and can move
it between the car and truck as I need to. While not allways accurate
it has a traffic warning for the traffic jams and backups.