Are you looking for information on the motor's real world application?
If so, just look at the name
If I'm not mistaken (which is ENTIRELY possible) they are used to retract van doors on those big maxi-vans. Again, don't hold me to that. If someone could verify that, it would help me out a great deal (I pretty much understand what most of the motors are used for, but this one is sort of fuzzy).
If that's NOT what you're looking for, then please elaborate further...do you want to know about motors in general? The VDM's gearbox?