OhMiGodI assume that you set a start and end point to focus and it will pull it for you.
If it had that It'd be amazing. Only downside would be if it it just went from point A to point B whenever you tell it to start. What if you like have to focus on one spot for 4 seconds then rack to a closer object for...10 seconds then Back to the first object. I don't think It could do something that comprehensive. But it's still be nice for simple shots.