Definition: The word "hot rock" refers to a hot, bouncy, and flammable substance that can be found in certain types of rocks and is often used as an alternative to traditional gasoline when fueling vehicles. In terms of its definition, it is a term commonly used in the automotive industry to describe a type of fuel that is not traditionally used for transportation but has gained popularity due to its high heat and flammable properties. Hot rock fuel is often associated with the use of diesel as an alternative fuel in some countries, although other types of gasoline can also be found in vehicles. Hot rock fuel typically contains high levels of carbon monoxide and hydrogen peroxide, which can cause a spark when ignited. In contrast to traditional gasoline, hot rock fuel has a higher efficiency rating for engine performance and is more environmentally friendly than conventional diesel fuel.