iRobot Shop Vac

So about a month ago my mum bought a iRobot Roomba robot vacuum for her house and she loves it. I recently spent the day chillin with her and saw it in action and i have to say i was VERY impressed. She had bought one of the higher end pet versions that has a dock that it automatically goes to when it needs to be charged so you dont even have to charge it yourself....verrrry cool. I mean this thing goes everywhere and cleans extremely well...
So i have been looking at all of their models (i want the one with the remote ) and came across this one http://store.irobot.com/category/index.jsp?categoryId=3334468&cp=2804605&ab=CMS_IRBT_Supercat_070109

This one is a shop vac!!!
i was dead chuffed when i saw it and i am thinking about picking one up in a couple of months. I thought you guys who use your garages/shop as much as me (wrenching on yotas and whatnot) would also appreciate the usefulness of it...cause i mean who really wants to use a normal stupid shop vac to clean everything...