Acela isn't really HSR for most of the route: average speed NY-Boston is ~70 mph (>150 mph is just in southern Rhode Island, IRC). Averages on most TGV and Euro

Acela isn't really HSR for most of the route: average speed NY-Boston is ~70 mph (>150 mph is just in southern Rhode Island, IRC). Averages on most TGV and Eurostar lines are at least twice as fast. https://en.wikipedia.org/wiki/Acela_Express https://en.wikipedia.org/wiki/Acela_Express