have caused much amusement...
If you see a car in a bike bay, park as close as possible to one end... and get others to park at the other end....
retire to comfy nearby location and wait for much driver-irateness to ensue....
Conversely, as a protest against Slough (I think) council shutting bike bays, several MAG groups invaded their main car park one Saturday morning, early.... strictly one bike per bay, all paid and displayed...
Watch the bastard cagers moan!
"Life isn't about waiting for the storm to pass... It is about learning how to dance in the rain"
http://www.flickr.com/photos/44482445@N04/