Has anyone used aftermarket GPS in their cars? What type, why this one, price? <br>Ihave been using my Garman 195 from my airplane. but looking for A car unit, but not A lap top as they are too big for Audi.

Gary,the new Garmin GPS III is pretty slick and quite small. You can insert cards for your area and it does it all as far as getting from A to B. <br>NavCom technologies at (888)942-8697 can probably help you out..for more info.

I have the Garmin GPS III and there is no way to insert cards into this unit. However, it will still do everything that a handheld GPS should do. It has built-in maps of all the major US roads. The problem is that these maps can never be updated. That's ok with me, I didn't buy it for true street navigation, and it does have a port for connecting to a laptop in case you ever want to play the true mapping game. The built-in maps give you a sense of where you are and that's good enough for me.<p>If you want to do true street navigation, then Garmin makes a unit called the "Street Pilot", I think. This has maps and I think it probably does have upgrade capabilities. It also has a larger screen. The screen on my GPS III is about 1.5" x 2.5".<p>I suggest that you decide what features you want, and then choose accordingly. For instance, I wanted a handheld unit, not the street pilot. I was going to get the Garmin GPS II+ since it seems the same as the GPS III. The GPS II+ gets up to 24 hours on 4 AA batteries. The GPS III gets about 8 hours on 4 AA batteries. However, the screens on the GPS III are so much nicer. The units have the same shell, but the GPS III is completely new inside. I was told that the GPS III has a 386 processor in it, so that plus the mapping feature draws a lot of power.<p>When I went to look at GPS's, I took my own batteries with me and turned each one on to see how they functioned. Once I saw the GPS II+ and GPS III side by side, I was convinced to get the GPS III.<p>Like almost all Garmin units, the GPS III has the following functions that I like:<p>- 12 channel receiver<br>- date and time pulled from a satellite<br>- current speed<br>- average speed for the trip<br>- max speed (I didn't find another manufacturer with this feature)<br>- altitude<br>- trip odometer<br>- trip timer<br>- compass with latitude and longitude<br>- ability to receive DGPS with optional antenna<br>- waterproof to something like one meter (you can drop it in a creek or use it in the rain)<p>It picks up the satellites pretty quickly outdoors but usually not at all indoors.<p>I wanted the max speed indicator because I've used it when I've had my car on a race track and also I've carried my GPS with me when I go snowboarding (current max speed on a board - 30.2 MPH).<p>The Garmin units do the "bread crumb trail" to show where you've been and how you got there.<p>I originally bought the Magellan Colortrak and had it for a few days but then traded it in for the GPS III.<p>I think I paid about $290 for the GPS III.<p>Good GPS info site:<br> <br><a href="http://joe.mehaffey.com">joe.mehaffey.com</a><br> <br>Online GPS Stores:<br> <br><a href="http://www.gps4fun.com">www.gps4fun.com</a><br><a href="http://www.thegpsstore.com">www.thegpsstore.com</a><br><a href="http://www.imaginegps.com">www.imaginegps.com</a><br> <br>GPS Manufacturer Sites:<br> <br><a href="http://www.garmin.com">www.garmin.com</a><br><a href="http://www.magellangps.com">www.magellangps.com</a><br>