(a) Any “battery electric vehicle,” defined as any vehicle that operates exclusively on electrical energy from an off-board source that is stored in the vehicle’s batteries, and produces zero tailpipe emissions or pollution when stationary or operating;

(b) Any “plug-in hybrid electric vehicle (PHEV),” defined as an electric vehicle that (i) contains an internal combustion engine and allows power to be delivered to drive wheels by an electric motor; (ii) charges its battery primarily by connecting to the grid or other off-board electrical source; (iii) may, additionally, be able to sustain battery charge using an on-board internal combustion driven generator; and iv) has the ability to travel powered by electricity;

(c) Any “neighborhood electric vehicle,” defined as a self-propelled, electrically powered four-wheeled motor vehicle whose speed attainable in one mile is more than 20 miles per hour and not more than 25 miles per hour and conforms to federal regulations set forth in 49 C.F.R. Section 571.500;

(d) Any “medium-speed electric vehicle,” defined as a self-propelled, electrically powered four-wheeled motor vehicle, equipped with a roll cage or crush proof body design, whose speed attainable in one mile is more than 25 miles per hour but not more than 35 miles per hour and otherwise meets or exceeds the federal regulations set forth in 49 C.F.R. Section 571.500;