Minnie,
Harley Davidson motor company is VERY protective of their logo and name (ie the bar and shield). They only license it's use to those willing to pay the big bucks for it. The fabric posted on E-bay looked to me to be cut up sheets because the designs were the same, keep that in mind if you decide to order from that. I have found entire harley sheet sets on sale at K-mart for a fraction of what the ebay seller is selling.
I didn't go through all the replies but here is a link to a place that specializes in motorcycle themed fabric.
http://creativematrixstudios.com/asp...Shop/index.asp
If you google "motorcycle fabric" you will get loads of hits. I have also made loads of Harley T-shirt quilts that turned out very nice. Here is a link to the thread with how to and pictures
http://www.quiltingboard.com/t-35279-1.htm