I don't know what speeds the cars are rated for, but the use of 60-year-old cars wouldn't be very impressive for folks expecting a new high speed operation.
I do not understand this statement... who cares how old the cars are as long as they look nice and they run smooth / safely? The NCDOT cars are 60 years old, but they look brand new. Obviously the cars would be refurbished to look like new.
If they can be rated for 110mph operation, they would work really well. Just need a major overhaul, like new interior colors and furnishing. They certainly have good, high capacity too. Now, a few would have to have a complete renovation to become the promised bistros. But they could work well. The only thing is that single level cars are considered to be "sexier" and thus more attractive.
My feeling is that it's trainsets that a fascination (that I can
not understand because of equipment inflexibility) has built around.
And at least in Amtrak's plan, the corridor cars
were to be bilevels (though obviously the Silvers would remain single level due to operating up north).
As to the Talgos, the biggest problems that I see are:
1) There's no ready way to expand the equipment in use, since Talgo is shutting its production facility down;
2) Two sets isn't going to be enough for the advertised service, which I
believe mentions hourly service. That implies 6-10 sets of equipment (6 if you're willing to have a periodic gap in service; 10 if you want to avoid that
and you account for needing 20% of the equipment as spares...though this
might be kept down slightly if all of the inspections and whatnot take place in Florida); and
3) IIRC, there's no real advantage to using the Talgos in FL given the relatively straight tracks.
As to the Hi-Levels: I'm certain that they are capable of 90 MPH. Whether they can do 110 MPH is a question mark, of course, but you have a
lot of PVs from the same era that are rated for 110 MPH...to say nothing of Amtrak's Heritage equipment of the same general vintage.
To be honest, if I was the FEC and I
really wanted to make 2014 for a startup that needed 8-10 sets, I'd grab the Hi-Levels while placing an order for equipment that would (more or less) match up in appearance. I'd make sure that the cafe/bistros were at the "front of the line" for delivery (to fill the gap in the existing equipment; basically, whomever was delivering the equipment would be told to build the cafes first and the coaches second), and I'd order about 8-10 trains' worth of equipment. Eventually (I'm assuming 4-6 years for delivering the whole order), I would phase the Hi-Levels out of regular service (though still using them as the protect sets, for "surge" equipment when the seasons demanded it, and/or to enable a relatively quick startup of new service to Tampa and/or Jacksonville should that time come). Even if I couldn't get the full hourly service running with the extant equipment, I'd have enough to run reasonably frequent service right out of the gate, with a planned stepping-up of service a year or two down the road.