Found this cool-looking coin on a rainy day. It became more interesting when I read about it on the coin page. Here's a link to Willie Nelson's biofuel page. http://www.biowillieusa.com/index.php
The facility is in Durant,OK so people could get this coin north of Dallas about 75 miles. I'm willing to bet there are caches in Durant. Also, there is a cache hidden in the parking lot of Willie's Place, that will soon be offering biodiesel, in Carl's Corner south of Dallas on I-35. Dark Star and I recently stopped there and met the DJs for his XM radio station and had some free coffee and doughnuts.
I hope these are some ideas that will get this coin to its goal! Great idea BTW!