That does explain the confusion but it brings up another question. Why does it call itself that? Do they figure not enough people in England would know what the word means in the states,etc? I notice that the one in UK was established in 1987, well after our rail service. Perhaps they felt the differences in the countries, cultures etc were sufficient to waylay any confusion?
Wonder what the actual derivation is of their name? I know that some words have different meanings on opposite sides of the Atlantic, but these are invented commercial names of modern day business so looks like they would have avoided confusion. After all, some people in the UK would like to travel in the US., and need to know that "our" Amtrak has no connection with theirs! (they need to know they are not going to be shipped around like packages!)
On another note. I think Viewliner is correct about the origin of "our" Amtrak's name. That kind of detail gets lost and forgotten and confused through the years, even, perhaps, by the people who would have posted the info Anthony referred to. I, of course, do not have that info with me at work to verify.