If the lack of an optional GPS module has been putting you off buying a Dell Mini 10 (and why wouldn't it?) then you can look forward to next week when the "Dell Wireless 700 location solution" will be made available as an upgrade module, bringing A-GPS to the netbook.
The module uses a Broadcom A-GPS chip and will also provide Wi-Fi location, via Skyhook Wireless, which relies on access points offering their location information to provide a rough (10m-20m) position.
Software-wise Dell is bundling Co-Pilot making it possible to use the Mini 10 as a large, portable sat-nav; albeit a highly impractical one. Admittedly the 10in screen should best most add-in sat-navs for 2D and 3D map display, if not ease of mounting.
Dell will also be pre-installing a Web browser search plug-in called Loki, which offers location-based results as well as hooking into 'location-aware' sites such as Flikr.
Whether the Dell Wireless 700 location solution will be an upgrade option for Mini 10s outside of the US is unknown as yet. If it doesn't come in the Mini 10, though, it's not unlikely we'll see it included in a different system eventually.