[Street Atlas format available?]

Hi.

First, I confused the name, I intended to say TeleAtlas, not Street Atlas. Second, the format specs are available, just not to the general public. In other words: One has to sign a contract to get those specs, and they might even charge some (unknown to me) amount for that.
However, here are some collected links about map data (mainly providers of such data, some info about different formats should also be in there):
AND International Publishers
Map Projection Overview
Map Projection Overview
MapQuest Partners
SDAL Format
Tele Atlas

cu,
sven