Assuming you still own a car in this godforsaken economic clime, deCarta has some neat little tricks up its 'navigation solution' sleeve.
The location-based services and software developer recently launched a search and navigation platform with some nifty services for drivers.
Besides letting you know where you are, the NavSearch API will offer optimised routes based on local traffic conditions, and the shortest routes to places you search for on the web. The platform also features a direct link to the cheapest petrol nearby, and a specialised web search that allows you to search along the route you've chosen.
Available at the end of March.