
1) American express
Found on
https://www.crosswordclues.com/clue/amtrak

1) US rail system 2) US train system 3) Acela express offerer 4) Acela express operator 5) Acela express runner 6) Acela offerer 7) Acela operator 8) Acela runner 9) Auto Train operator 10) Big name in trains 11) California railroad 12) California Zephyr operator 13) California zephyr runner 14) City of new orleans operator
Found on
https://www.crosswordclues.com/clue/amtrak

federally supported corporation that operates nearly all intercity passenger trains in the United States. It was established by Congress in 1970 and ... [4 related articles]
Found on
http://www.britannica.com/eb/a-z/a/66

a government-subsidized public corporation created by Congress in 1970 to operate a national intercity passenger railroad system through contracts with existing railroads.
Found on
https://www.infoplease.com/dictionary/amtrak
No exact match found.