Logistic Issues – Traders Exclusive – Chris Robinson talks about the grains rallying. The number one thing driving this rally is the grains cannot get to the crushers because of a rail car shortage. Posted on October 28, 2014January 11, 2018 by Chris Robinson Logistic Issues – Traders Exclusive – Chris Robinson talks about the grains rallying. The number one thing driving this rally is the grains cannot get to the crushers because of a rail car shortage.