You haven't really said what's so good about the guided busway though @
thom. Why is this better than a normal road or lane in an existing road that is for buses only?
I know - this is the cafe and I was quite content to make a tangential post ;-)
To be honest I have not seen it but I imagine the sequestered route is quicker than a road because there is no interference from other traffic as well as due to the guided bus wheels. Quite possibly it is less expensive to maintain than a road as well - only buses can use it so wear and tear is reduced, the surface is not full tarmac as well. It also shows the commitment of the local council to make public transport work around Cambridge.
I see this as a potential alternative to a light railway but more flexible because the vehicles can slip round the narrow streets of Cambridge as well. Given it runs along an old railway route, I don't quite see how you would have augmented the existing road and made use of the structure.
I'm maybe a bit more up for schemes like this than you are though - infrastructure projects have important experimental value too.
Do you know feedback from users as to whether they like it ? I think the one person on this thread who is a user seems quite positive about it.
In terms of the train infrastructure, I think Cambridge will have a 2nd station soon, north of the current one, across the river on the way to Ely. That should make it a realistic possibility to commute to London from more bits of Cambridge and perhaps reduce central town traffic too.