I live a Satnav-free life (in a small city on an island) so this is one of those things that I would never be that mindful of, but some of you are, I'm sure.
Ken H was one such Saab owner and he spells out the problem and the solution below (thanks Ken!).
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It's a fairy well known fact that Saab stopped offering updates for the satnav in 9-3 SS/SC MY 03-06, and hence people with those systems (me included) were stuck without available upgraded maps.
It was rumored that Mazda used the same SDAL DVD for some of their satnavs, but there was never a firm confirmation to be found that this would actually work.
In the end I figured there's only one way to find out, so I ordered a disc directly from Navteq... And it did indeed work without any problems.
I now have 2008/2009 maps in my system!
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Swade here, again.....
This does bring up the usefulness of integrated Satnav in the era of very affordable, portable Satnav that you can take from vehicle to vehicle.
Personally, if I ever had the need for Satnav, I know which one I'd choose.

Disc is about 260 EURO in Europe, and 199 USD in USA.
(It looks like US has 2008 as the last update)
I believe that car makers should work together with the makers of aftermarket units instead. There are only some slick solutions to build in TomTom's in the dash, and Fiat has gone even further with interaction between the TomTom and the car.
Or is there any other nav-system that fits in the same place?
I own one of the first GPS's wich take advantage of internal accelerometeres. I've got to say that 1. I don't like the result at all, 2. I don't think they are using them wisely.
Maybe the newer generation will get better.
As for the 9-3, I did buy a fully compatible 2007 Western Europe disc for my '03 Aero
IN your proposals you keep the most expensive part of the infotainment system.
I opted for this device instead of the 730 because of the internal Gyro, but I think today I would go for the 750. (In defense of TomTom; the 930 was the first one offering that, in the mean time the 940 and 950 have hited the market).
But the biggest flaw of portable sat-navs is not that, but the fact they don't know where they are when you turn them on, and it can take quite long till they find 4 satelites.
I believe that the future for automotive infotainment will be a blend of iPhone/Android/Genivi (www.genivi.org).
This genivi project looks good, but to me it looks like the OEM are joining forces to be able to deliver in vehicle infotainment at a lower production cost.
What Genivi are doing is more or less to put a connected Linux Netbook in the dash. I think that the customers will not be satisfied with the apps that the OEMs say that they can run on that platform. And I think that people will think that it is stupid to buy a navigation unit when there's an application that you can run on that platform.
What do you mean with an "aplication that you can run on that platform"??
I mean that if there's a navigation application which can run on the system which is already in the car, I wouldn't buy the additional hardware.
I guess that the OEMs doesn't want this to happen, but I think that they will need to open it up. Like iPhone, for instance.
No you didn't sound aggresive, remember at least one of us doesn't use its mother tongue to comunicate here ;-)
I agree with you. But let's think about a OEM building a GENIVI infotainment system on his car. I don't care if it's based on Linux or something else. But do you really think they would deliver a system that can be easily be changed with non-tested aplications? No, I don't think so. I think you will get a AppStore-like thing where you can buy whatever the OEM likes you to buy (the AppStore do also offer what Apple thinks is OK for you). So, although gemivi is based on an open platform it will be quite closed towards the user.I think that the app providers won't develop for the new platform unless they know that they can sell the apps in relatively high volumes.
If they don't manage to do this in a good way, people will keep bringing their TomToms into the cars. I believe that it will be relatively open. Like iPhone.
I personally don't need apps or whatever to run on my IVI. I've read about those 5$ nav apps for the iPhone, but I haven't tested them (don't own an iPhone), so I don't know if they are better than the TomTom App(as an example).
Today's "solutions" to put these devices anywhere (windscreen, dashboard, boxes) are inellegant and unsafe.
The display is way larger than a typical cell phone and is not that much smaller than a garman or other similar device.
Also, FAR less expensive!
USD$2500.00 for a built-in unit...well under USD$500.00 for an equally capable handheld.
Do internal sat navs have a faster fixing because they simply assume the last position before tgey were switched off as the still valid position? I guess this could also be implemented in portables?!
For those of you with TomTom-like portable units when you leave your car what do you do with it?
In the UK one of the targets for the enterprising car thieves are portable SatNavs. Drivers are advised to remove ALL traces or evidence of a portable Satnav. If Mr TeaLeaf sees wiring, the cradle or the suction marks on the windscreen where the device was fitted then he would assume the unit is concealed in the car, in the glove compartment or the boot. A little bit of broken glass and a phone call to the insurance ensues. After all, not all people want to leave their car and walk around with the device in their pocket or bags. do they? The UK insurance companies are quite unsymapethic to this and the cost of the unit and repair is sometimes less than the excess.
A built in unit in my old 9-3 (and I was able to get a 2007 disk BTW) and my current 9-5 are relatively discreetly placed on the all-black dashboard...fully integrated into the car and less attractive to opportunist thieves.