In this subchapter:
(1) “Conventional gasoline” means any gasoline that does not meet specifications set by a certification under Section 211(k) of the federal Clean Air Act (42 U.S.C. § 7545(k)).
(2) “Golf cart” has the meaning assigned by § 551.401, Transportation Code.
(3) “Light-duty motor vehicle” has the meaning assigned by § 386.151, Health and Safety Code.
(4) “Motor vehicle” has the meaning assigned by § 386.151, Health and Safety Code.
(5) “Neighborhood electric vehicle” means a motor vehicle that:
(A) is originally manufactured to meet, and does meet, the equipment requirements and safety standards established for “low-speed vehicles” in Federal Motor Vehicle Safety Standard 500 (49 C.F.R. § 571.500);
(B) is a slow-moving vehicle, as defined by § 547.001, Transportation Code, that is able to attain a speed of more than 20 miles per hour but not more than 25 miles per hour in one mile on a paved, level surface;
(C) is a four-wheeled motor vehicle;
(D) is powered by electricity or alternative power sources;
(E) has a gross vehicle weight rating of less than 3,000 pounds; and
(F) is not a golf cart.
(6) “Plug-in hybrid motor vehicle” means a vehicle that:
(A) draws motive power from a battery with a capacity of at least four kilowatt-hours;
(B) can be recharged from an external source of electricity for motive power; and
(C) is a light-duty motor vehicle capable of operating at highway speeds, excluding golf carts and neighborhood electric vehicles.