The Amtrak Express Train is a high-speed rail service operated by Amtrak, the national rail operator in the United States. The Acela Express is the fastest and most luxurious of the Amtrak Express Trains, offering passengers a comfortable and convenient way to travel between major cities. It features amenities such as Wi-Fi, power outlets, and reclining seats. The Acela Express is the only Amtrak Express Train that offers non-stop service between Washington, D.C. and Boston.