Non-liquid alternative vehicle fuel
Non-liquid alternative vehicle fuel means alternative fuel used for the purpose of powering a non-liquid alternative fueled vehicle, including, but not limited to, compressed natural gas (CNG), hydrogen gas (hydrogen), electricity, and any other non-liquid vehicle fuel the Secretary determines, by rule, is substantially not petroleum and would yield substantial energy benefits and substantial environmental benefits.
Source
16 CFR § 309.1
Scoping language
As used in subparts B and C of this part: