Dynamic Perception has some interesting-looking micro-dolly/controller combos for sale, and they've demonstrated how to create moving, time-lapse, HDR videos using auto exposure bracketing on a Pentax K7. It's not something you'll need to do everyday, but if you ever need to create this very specialized shot, here's how.
The setting isn't the most visual, but one can imagine how a better location might yield stunning results. If you just want to see the shot in action, fast forward to the 15:00 mark.
The Dynamic Perception guys are also the founders of the OpenMoCo open-source motion-control community.
[via Filmmaker IQ]