Maine Potato Traffic Collapse (1970s)

What happened to all of the potato traffic that moved for decades out of Maine? NPR's Planet Money podcast has a recent episode "The Maine Potato War of 1976". While the completion of I95 and the Penn Central collapse were major contributors, the podcast (24 minutes) goes into the financial war between Western potato growers and those from Maine in the New York Mercantile Exchange. The result was nail in the coffin.
https://www.npr.org/2024/01/12/11979564 ... ze-default

NPR link in the above post no longer valid, but an interesting written article here:

https://newenglandhistoricalsociety.com ... t-show-up/