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A vehicle is any non-living device that is used to move people and goods. Vehicles may include automobiles, bicycles, trains, people, helicopters, and aircraft. Unlike the infrastructure, the vehicle moves along with the cargo and riders. Vehicles that do not operate on land usualy called crafts.
The vehicles must provide its own propulsion. This is most commonly done through a steam engine, compustion engine, electic motor, a jet engine or a rocket, though other means of propulsion also exist. Vehicles also need a system of converting the energy into movement; this is most commonly done through wheels, propellers and pressure. Most types of vehicles cause air pollution and use large amounts of land.
Vehicles are most commonly staffed by a driver. For passenger transport, the vehicle must have a compartment for the passenger. Simple vehicles, such as autimobiles, bicycles or simple aircraft, may have one of the passengers asa driver.

1) What is the text about?
2) What are the basic materials for packages?