Last weekend's CicLAvia 2013 in Los Angeles, CA saw this enormous bike, called StoopidTallBike. Indeed.
Richie Trimble explains his work:
14.5ft at the Seat
Built in 12 work hours
One Huffy beach cruiser, 2" square tubing, 3/4" round tubing, and 1" round tubing
26" single speed coaster brake wheelset
6 1/2 single speed bicycle chains (32.5ft of chain)