Subway Maps

http://www.amadeus.net/home/new/subwaymaps/en/index.htm

Free Classical Music

Wikipedia offers a very extensive collection of free classical music. See: http://en.wikipedia.org/wiki/Wikipedia:Sound/list and http://youmakemedia.com/2006/10/08/free-classical-music/

Pouring away gas

[...] When you figure in that your mass compared to the car’s mass is about 5%, that leaves less than one percent of the energy in the fuel for transporting YOU. Let’s be generous and say it’s actually one percent. [...]

[...] When you convert the amount of energy needed to bike a mile and convert that to the car’s miles-per-gallon equivalent, riding a bicycle has a “miles-per-gallon” of about 650. [...]

http://www.geektieguy.com/2007/01/26/more-on-pouring-away-gas/