Key Survey Enterprise is a data collection tool for the whole company. American Airlines uses their custom research surveys to test a lot of ideas. For example, the airline has a relationship with Citibank, which has a MasterCard.
1 Category A (A-segment) vehicles are 2-box vehicles of between 4 and 4.5 meters in length, or three-box vehicles (i.e., sedans with a trunk) with engines of less than 1600 cc.  Category B (B-segment) vehicles are longer than 4.5 m in length with engines of over 1600 cc.
Engines are measured in litres. The parts of the engine where the fuel is burned to produce movement are called the cylinders â a car will usually have three, four, six or eight cylinders â and the volme of these cylinders is measured in litres. A 2.0-litre engine will have two litres of cylinder space altogether. So if it has four cylinders, each cylinder will be 500ml in volume (roughly the same as a large wine glass). Click here to see all cars with engines of 2.0 litres to 2.2 litres. A two-litre engine might also be referred to as 2.0 in brochures. Sometimes, the size of the engine will be part of the name of the car.