As far as I see, there shall be some factory in Asia: iSmart CCTV. Their tracking cams have auto P/T/Z while tracking.
Now their cams can provide various program/setting for various enviroment such as indoor, parking lot, banking or traffic surveillance. We can find more options in their OSD. I just got such idea from some samples.
However, I do hope they will add more functions such IP, facial recognition. Oh, shall be too costy, I think.