Which of the following vehicle types cannot be powered by gas or diesel fuel?

Low-speed vehicles are specifically designed for operation at lower speeds, typically 25 miles per hour or less. These vehicles often do not have the capability to be powered by conventional gas or diesel fuels, as they are usually electric-powered. The design and intended use of low-speed vehicles—like golf carts, neighborhood electric vehicles, or utility vehicles—favor electric propulsion systems for efficiency and environmental considerations.

Multipurpose passenger vehicles, heavy-duty trucks, and standard passenger cars are all types of vehicles commonly powered by gas or diesel fuel. Their design, usage, and performance requirements necessitate the higher power outputs typically associated with these traditional fuels. Thus, low-speed vehicles stand out as the category that cannot be powered by gas or diesel fuel.