What is a vehicle equipped with CNG cargo tanks used for?

A vehicle equipped with CNG cargo tanks is specifically designed to transport compressed natural gas. This design includes specialized tanks capable of handling the high pressure necessary to store CNG safely and efficiently. As natural gas vehicles (NGVs), these trucks are part of a growing emphasis on cleaner-burning fuel alternatives that reduce emissions and reliance on petroleum-based fuels.

The other options, involving gasoline, diesel, or oil, are not applicable as they require different types of tanks and equipment. Gasoline and diesel have distinct storage and safety requirements, while oil also necessitates specific containment systems. Therefore, the correct choice highlights the primary function of the vehicle in relation to its cargo capacity and intended use within the industry.