Let's start with a few reference points.
(1) "Dodgems" are electrically operated cars which derive their power from an overhead metal grid, via a vertical pole at the rear of the vehicle.
(2) "Cats" are small semi-domesticated mammals which possess tails which are somewhat conductive and which are normally held vertically.
(3) A mild, extremely non-lethal electric shock will almost certainly prompt a cat to move.
(4) Many domestic cats are left unattended during the day and are, presumably, bored.
Taking points (1) through (4) together, it would seem a simple matter to create a low-ceilinged cat/dodgem hybrid system providing valuable recreation and exercise for one or more domestic cats.-- MaxwellBuchanan, Mar 03 2014 Sorry, this makes no sense at all. But the problem may be that I am dead sober at the moment. Will rectify situation and get back to you.-- ytk, Mar 04 2014 Having gone right off cats some time ago, this gets my bun.-- not_morrison_rm, Mar 04 2014 Ha, love the visual, hate the idea. +-- blissmiss, Mar 04 2014 Pokemeow... ya gotta catgem all.-- 2 fries shy of a happy meal, Mar 04 2014 Oh, we LIKE this idea ... not quite as proposed, but differing only in detail, like the voltages and currents employed ...-- 8th of 7, Mar 04 2014 For a cat left unattended indoors, the dwelling could be transformed into an obstacle course, making is less boring, perhaps. (Journeys to food could be made into adventures).
For a cat with access to any kind of outdoors, there is never any boredom. In blizzards I suppose they don't come home if permitted to follow their natural impulse to go and kill off wildlife, so a catgem might fill those confined hours.
For a cat with access to your bird bath, a somewhat more powerful catgem around that might work nicely - especially if he's the one from next door who only visits to yowl at "your" cat at 3 am.-- skoomphemph, Mar 04 2014 random, halfbakery