For a number of reasons outlined by Brad Frost here I would vote for 'static, and clickable' to launch the default map app on the mobile device.
Edit to provide more detail:
Brad Frost proposes conditional loading to serve up the best map in the right context. Embed the map if the screensize is appropriate, otherwise serve up a static image which links to the interactive map. His reasons to avoid embedding the map on small mobile screens are:
Cramped screen space: forcing users to interact with a map in a small viewport can be a frustrating experience.
Frame Inception: an iframe within a page, within a browser, within a mobile OS. Too many experience layers.
Native experience is better: many (apparently not iOS6) mobile OSs will intercept a link to a google map and launch the default (and more robust) mapping app.
Performance Overhead: lots of scripts and images are needed to support an embedded map.