Roadkill

Motorcycle Chase is an nickname for a cancelled mission from Call of Duty: Modern Warfare 2.

Information
Inside the art book, there is a picture of a person on a motorcycle, indicating an early concept for a chase scene that never made it into the game. If this level included a vehicle section (most likely on a motorcycle), it probably would have similar to the snowmobile sequence in Cliffhanger, and would have used the same controls. It was most likely cancelled to avoid too many chase levels. It could have also been a possible mission after Hornet's Nest where Rojas escapes on the motorcycle and TF141 will need to chase him down (this is supported by one of Ghost's lines stating that Rojas was trying to reach a motorcycle).