I've taken the Amtrak Auto Train, where you take your car with you, over a dozen times. It's great for overpackers who want to reduce driving time.
Briefly

"The Auto Train is a unique Amtrak route that allows passengers to travel with their own vehicles between Virginia and Florida, bypassing congested highways and reducing driving stress."
"Traveling on the Auto Train provides a way to relax and enjoy the scenery while avoiding the hassle of a long road trip. Families can enjoy the convenience of bringing everything they need without the burden of strict luggage limits imposed by airlines."
Read at Business Insider
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