When I first aqcuired my last dog Bonehead (English Setter from a rescue home) she had serious hyperactivity issues, she would've quite easily run for 20+ miles every day if allowed too, and could never properly settle down to sleep for more than an hour at a time, our Vet eventually narrowed it down to a malfunctioning thyroid. A couple of little pills in her food every day and she settled down to a more normal behaviour pattern within a couple of weeks.
The dog treadmill idea made me laugh, its no wonder the vast majority of (hungry) people in undeveloped countries shake their heads at our over-the-top culture " Control your dog's exercise regime, Provide exercise in adverse weather and Prevent obesity & associated problems" 
http://www.jogadog.com/
Made me laugh too

Bonehead used to love being out in 'adverse' weather, the wetter the better

We were never very popular with the the 'owners club' type setter owners though

I used to keep her clipped rather short (you're supposed to keep their fur long on their chests and round the legs), because that way it was a damned sight easier to hose and dry her after she'd been playing in the really rancid puddles

I'd quite like another dog, but we'll have to wait until our loveable but psychotic cat eventually dies, if we got anything smaller than a Rottweiler she'd probably kill it
