Md. Code, Public Utilities § 7–308

(a) In this section, “natural gas vehicle” means a vehicle operated on a public road and powered by natural gas.

(b) The sale by any person of natural gas that is received from a public service company for use as a motor fuel in a natural gas vehicle is not subject to regulation by the Commission.

(c) A person that sells natural gas received from a public service company for use as a motor fuel in a natural gas vehicle is not considered a public service company for purposes of this article.