A jelly roll race quilt top can be made in under two hours using a pre cut jelly roll. It can be sandwiched and turned and tied quilted in about 2 hours so a completed quilt can be made in less then 5 hours. Some of my guild members can make the whole Jelly roll race quilt in less then two hours. Some make the quilt top in under 45 min.
video here:
http://blog.heirloomcreations.net/?p=1897