The General Electric P42, also known as the "Genesis" locomotive, is a modern 4200 horsepower passenger locomotive used across the United States and Canada with Amtrak utilizing it in a majority of their revenue service. The Phase V "wave" paint scheme was originally introduced in 2000 to accompany the new Amtrak Acela Express and featured Amtrak's new Travelmark logo; it has since undergone at least one revision from its original Phase V appearance with a lowered sill stripe and the removal of the “Amtrak” lettering from beneath the cab.