Bikes and other non-polluting forms of transport are very welcome.
Those without human powered transport might want to join the "Defend Public Services Demonstration" that is meeting in the same spot at noon. http://www.indymedia.org.uk/en/regions/cambridge/2006/02/334361.html
http://www.cambridgeaction.net/swapshop/CriticalMassSat29.pdf
Please print and distribute!