runway –n. a long road used by airplanes to start out or land

horsepower – n. unit of measurement for engine power

diesel – n. type of engine that uses diesel fuel

modify – v. make changes to improve something

clutch – n. piece of equipment in a vehicle that allows the driver to change gears

transmission – n. part of a vehicle that transfers power from the engine to the wheels

gears – n. used by a car’s transmission to control different speeds of the engine