I think the op is refering to when you manually type in your starting and ending address on google maps.. it plots your course.. triangulation works by obtaining your location through nearby towers in the event your in a new city or lost.
I think he's just misunderstanding. Are you talking about the purple circle around your staring point on a trip? If so then I assure you its not the gps thing. The chances of your one stock iPhone to somehow have a single feature from Apple's future update, are slim at best
Then maybe you didn't read the first sentence of my post..."That is not a standard app." OF course, maybe I could have been clearer by saying "there is not a STANDARD triangulation app yet that is included in the standard firmware."
Depends on the area, but my assumption would be yes in your case. And since Google Maps will have to rely on the same cell towers it likely won't do any better.
Sparsely populated areas, with relatively few cell towers, won't be as accurate as densely populated areas with many cell towers.
The non-free version of Navizon also uses WiFi too (or, from what I observed, the address of the first router it can locate from your ISP). I don't really see this as much of an advantage, but it's there nontheless.