Dates of Operation: 1967-1983 (16 years)
The Tropicana Juice Train-
SCL was the more popular railroad which ran the "Juice Train". (However I don't know if it was the most popular.) The train ran from Bradenton, Florida to Kearny, New Jersey. CSX has since taken over these operations.
Being that Seaboard Coast Line was a shorter-lived railroad, I could not find much of the history on it. Here are some more links:
Pictures of the Seaboard Coast Line- (All pictures from railpictures.net; I do not take ownership for any.)