Oh BU66ER !!! Are you sure they haven't got it wrong mate? MCN have been wittering on about how dodgy speed cameras are on bikes - nabbing them at the wrong speed etc.
Even a 996 can't go from 0-40 in 5 metres. You sure it wasn't a car that set it off and just clocked you as well?
If it's only 5 metres from the garage, how about going past the camera on your back wheel next time, at least your number plate will be facing the ground