A
truck or
lorry is a
motor vehicle designed to transport
cargo. Trucks vary greatly in size, power, and configuration, with the smallest being mechanically similar to an
automobile. Commercial trucks can be very large and powerful, and may be configured to mount specialized equipment, such as in the case of
fire trucks and
concrete mixers and
suction excavators. Modern trucks are powered by either
gasoline or
diesel engines, with diesel dominant in commercial applications. In the
European Union vehicles with a
gross combination mass of less than 3,500 kilograms are known as
Light commercial vehicles and those over as
Large goods vehicles.