For my interactive scene, I thought that a trip to Boston would be a good subject, and I snapped the background this weekend while at Yawkey station on the MBTA Commuter Rail.
The interactive elements include:
Clicking the white van to trigger a ball bounce along the highway,
Clicking the nearest black car to activate its emerald light trails,
Clicking the train tracks will send a ghost train barreling towards your cursor,
Clicking the Prudential building triggers a giant slingshot to rise,
And clicking the sky triggers a UFO abduction.