Do you like to keep fit? Do you like music? Does it make you weep with rage that you can't listen to your favourite vinyl while cycling through the metropolis?  Can you cycle at exactly 33/45 RPMS?

Then check out this bad boy:

If you absolutely MUST know more about this impressive feat of engineering then go here:
http://www.dezeen.com/2011/10/09/today-at-dezeen-platform-merel-slootheer-liat-azulay-and-pieter-frank-de-jong/