For Slingshot Owners who regularly use AMTRAK Auto Train, I just got this from the AMTRAK website. This was my backup plan, if the trailer deal fell through.
Auto Train Temporarily Suspends Acceptance of Can-Am, Rewaco and Slingshot Three-Wheelers
Effective November 1, 2016
Auto Train offers Amtrak customers the convenience of carrying cars, SUVs, motorcycles and other vehicles between the Lorton, VA, and Sanford, FL.
Effective November 1, 2016, "Trike" motorcycles (with two wheels in the back and one in the front) will be the only type of three-wheeler accepted aboard Auto Train.
We will temporarily discontinue accepting Can-Am, Rewaco, Slingshot and similar vehicles on Auto Train. Due to the unique design, these vehicles cannot be readily accommodated in our vehicle carriers. We are working with the carrier manufacturer to find a solution that will allow us to resume transporting these three-wheelers.
We appreciate your patronage and apologize for any inconvenience. For reservation and information visit Amtrak.com, use our free mobile apps, speak with station personnel or call 1-800-USA-RAIL (1-800-872-7245).
Thank you for traveling with Amtrak.
PSN 1016-02