Speeding through Linden, which is a stop only for NJ Transit and not Amtrak; is Amtrak Acela Express 2159, heading to Washington DC from Boston, Massachusetts. Acela Power Car 2018 is leading, with Power Car 2004 on the rear. This is Acela trainsest number 1, and as Amtrak never breaks up their Acela sets, this one always operates with 2018 and 2004. (Linden, New Jersey – February 5, 2025).