Specifications include, but are not limited to: A new light-duty motor vehicle is eligible if it has a gross vehicle weight rating (GVWR) of 10,000 pounds or less and is powered by CNG, LPG, or hydrogen fuel cell or other electric drive (plug-in or plug-in hybrid). Additionally, vehicles classified by the EPA as a “Medium-Duty Passenger Vehicle” or a “Class 2b Heavy-Duty Vehicle" with a GVWR up to and including 10,000 pounds and operating on an eligible fuel are included in this definition. If the vehicle is powered by CNG or LPG it must: a. have four wheels; b. be originally manufactured to comply with and have been certified by an original equipment manufacturer or intermediate or final state vehicle manufacturer as complying with, or have been altered to comply with, federal motor vehicle safety standards, state emissions regulations, and any additional state regulations applicable to vehicles powered by compressed natural gas or liquefied petroleum gas; c. have been manufactured for use primarily on public streets, roads, and highways; d. have a dedicated or bi-fuel CNG or LPG fuel system installed prior to first sale or installed in Texas within 500 miles of operation of the vehicle following first sale, and with a range of at least 125 miles as estimated, published, and updated by the United States Environmental Protection Agency; and e. have, as applicable, a: • CNG fuel system that complies with the 2013 (or newer) NFPA 52 Vehicular Gaseous Fuel Systems Code and American National Standard for Basic Requirements for CNG Vehicle Fuel Containers, commonly cited as "ANSI/CSA NGV2"; or • LPG fuel system that complies with the 2011 (or newer) NFPA 58 Liquefied Petroleum Gas Code and Section VII of the 2013 (or newer) ASME Boiler and Pressure Vessel Code. If the vehicle is powered by an electric motor, it must: a. have four wheels; b. have been manufactured for use primarily on public streets, roads, and highways; c. not have been modified from the original manufacturer’s specifications; d. have a maximum speed of at least 55 miles per hour; and e. be propelled to a significant extent by an electric motor that draws electricity from a hydrogen fuel cell or from a battery that has a capacity of at least four kilowatt hours; and f. is capable of being recharged from an external source of electricity (plug-in or plug-in hybrid).