The Horizon is a type of single-level intercity railroad passenger car used by Amtrak, the national rail passenger carrier in the United States. Amtrak ordered the cars to supplement their existing fleet of Amfleet I single-level cars used on shorter distance corridor trains. The design was based on the Comet railcar used for commuter railroads, but with modifications to make them more suitable for intercity service. Bombardier Transportation built 104 cars from 1988 to 1990 in two basic types: coaches and food service (café) cars.