Originally Posted by
invisiblehand
+1
Find the bike that fits. Changing a chainring is easy.
EDIT: If money is no object, then you can get a custom Bike Friday, Airnimal, or Moulton. Have fun choosing.
Maybe that's your answer then Iven, the moulton holds the bicycle speed record as I recall, and the current models split the frame in the middle. mind you for what you would pay for a new single or double pylon model I'm sure you build up a complete previously owned set of all the bikes that have been mentioned so far, and probably have some change left over.