Given the terrible events of yesterday evening, I can understand why one would ask this question, but for some the Auto Train is a good option for travel to FLA.
The AutoTrain saves 14 hours of wear and tear on both the car and passengers. It allows you go the distance and not have to worry about falling asleep, finding a motel, etc..etc..etc... With the AutoTrain, you cover the distance and arrive in Fla in the morning ready to go!...
For most, it is not a question of a cheaper alternative, but a viable option for those who don't want to, or can't fly for one reason or another and would rather not drive all night.
As far as facilities are concerned: It is widely known that the AutoTrain is one of the few routes that actually breaks even (or makes money on occasion) and as such, has some of the best facilities, cars and staff. Prior to today, it had a great safety record. I think the last accident was in 98 and that was a very minor one and the last 'major' one was in 1978.
I have taken the train twice and have tickets for this December. Of course, ideas are running through my mind, but there are risks in everything that we do and I still feel confident in the safety record of this line and rail travel in general. I am still planning to take the train in Dec.