Atomic Train is downright awful! And I won't even go near the newest Pelham 123! The 70's version was respectable.
I don't care how it was done in the new Pelham 123, you simply cannot pull off a heist like that in present day NYC subway!
Unfortunately, "Unstoppable" is being directed by Tony Scott, the same guy who thinks R142As are driven from the left and that you can send a runaway single R142A from Park Avenue to Coney Island by way of Shea Stadium (come on, really?

) when almost everything about that is so impossible that even out-of-towners who only saw The Map once could point that out. Both the 1974 film and the book had the runaway car (an R22 capable of single-unit operation) sent toward the South Ferry loop, which is entirely possible.
In terms of the quality of the films, the new one completely wrecked the story. I mean, seriously, even though Garber was forced by Ryder to shoot him (sorry if I spoiled it for you), Garber would probably have wound up in court. Ryder was just a [bleep]ing psycho coward in the new version because he wasn't man enough to commit suicide like the book and the '74 version, plus the '74 version was more believable (reminds me of Hans Landa from "Inglourious Basterds") and didn't pepper all of his sentences with cluster f-bombs. On that subject, the '74 version wasn't 100% loyal to the book either, but it still left many shades of the book intact and as a result, still felt very believable. The '09 version was clearly going for the glitz and glamor and fell flat with 49% of the critics (according to Rotten Tomatoes), as opposed to the original which received no negativity from Rotten Tomatoes.
On the subject of "Unstoppable", you need to dramatize the film, or else that just constitutes enough material for a one-hour National Geographic special and will get you much less money. Overdoing it, however, can cause a disaster of a film and maybe a few Razzie nominations.
Tony Scott already failed "Pelham 123", geography, and overall New York-ism forever and is already not doing too good with railroading. "Unstoppable" looks like it could be the same and it could wind up sinking him deeper, but there could be the potential that it might be better than "Pelham" and could win many people over, but we have to wait and see. After all, this film is still not coming out until November 12.