dduane:A rolling bridge: http://www.thomasheatherwick.com/projects_rolling_3.asp
(like literally. Kinda spiffy, although one wonders if it's possible to get trapped inside.)
And amusing portapotties.
http://www.youtube.com/watch?v=8gNsDp2N6yM
[append]
And also this:
http://www.stumbleupon.com/mainpics/829603.jpg
