Another bike with helium filled tubes. Also, this appears to be around a 53 cm frame and it is advertised as a ladies bike? Actually looks like a decent bike, too.
http://holland.craigslist.org/bik/1863524568.html
For sale is a Ladies Centurion Accordo RS road bike..... This bike weighs about 11 lbs and has very skinny little tires so it moves fast......