Motorway madness?

On a recent drive down to London, the route we took was mostly motorway.  One of the most annoying things that happened was the way people occupied the middle lane, a disorder that should be called "middle-lane-itis".  The characteristics of this disorder is the obsessional occupation of the middle lane, frequently travelling at 69 m.p.h.  The most annoying thing is when this disorder takes over a driver even when the left hand lane has no traffic in.  Treatment involved is being driven in a car in the left hand lane at a series of speeds starting at 60 m.p.h and progressing in steps up to 71 m.p.h.  To apply for treatment, you should e-mail your local constabulary admitting that you have incurable 'middle-lane-itis and that you would like to be offered treatment via the C.P.S.