There are a number of ways of delivering data in real-time but until recently it has looked like PubSubHubbub, with the backing of Google, was going to be the preferred method. However, the past couple of weeks have seen a couple of interesting developments which could indicate that the developer community may actually prefer HTTP Streaming.
You can now bring the power of MapQuest routing to your application, whether it runs on a server or in the browser. The granddaddy of mapping announced a Beta release of a brand new web service for driving directions.
As portable GPS devices become increasingly commonplace in cars, it was only a matter of time that such devices would become also networked and programmable. Dash Navigation, the maker of Dash Express, a "two-way, Internet-connected GPS navigation system," announced yesterday DashApps, an API and developer program for the Dash Express.