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It is a bit of overkill, yes... Personally I would be happy with 10 degrees/sec :-)
But I can also imagine application of something like this for supernova search, when a number of targets (galaxies) can be searched quickly (of course, with a careful planning, much slower slewing mounts could be equally useful).
Another reason for using such a fast scope is GRB hunting: afterglow lasts only couple of seconds to couple of minutes, so every second counts.
I am amazed with this because it uses direct coupled stepper motors - that means those motors must be really something, just imagine available torque and positional accuracy (<0.5"!!!) Also, no periodic errors (because there are no gears).
Well, this is highly professional equipment, designed with no compromise of any sort - US$35,000 is most likely out of question for majority of amateurs..
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