Public transport & cycling orbital for Cambridge

I have long thought that West Cambridge (and Northwest Cambridge, now that it is being built) should be connected by fast public transport to Cambridge railway station and to Addenbrookes hospital. The rough map above shows a proposed route running (from NW Cambridge) East to the Science Park and the new Chesterton Junction Railway Station; and (from West Cambridge) south alongside the M11 to Trumpington and the guided busway. This route would connect to both the Trumpington and Madingley Road Park-and-Ride sites.
If there were a nice cycle-path along these routes too, it would provide pleasant commuting options for people who live outside Cambridge to get to work at the West Cambridge, NW Cambridge, or Science Park sites.
The part alongside the M11 could have a nice view of the Cambridge wind farm that I visualised in June 2009. A 36-turbine wind farm would produce enough power, on average, to power the University's Departments and Offices (not including the Colleges). I think that an arc of turbines alongside the M11 could make an interesting icon.