The purpose of the Fuel Choice and Deregulation Act of 2025 is to ease regulations for producers and consumers of alternative fuels. The goal is to promote the use of cleaner fuels and technologies, thereby reducing reliance on traditional fossil fuels and improving air quality. Key provisions of the Act include several significant changes to existing laws. First, it allows for the aftermarket conversion of older vehicles to alternative fuel without being classified as tampering, provided the conversion is done correctly and does not degrade emissions.