578.120.  Sale of motor vehicles on Sunday prohibited, exceptions — encouragement by certain associations to remain closed on Sundays not a violation of antitrust laws — violations, penalty. — 1.  Notwithstanding any provision in this chapter to the contrary, no dealer, distributor or manufacturer licensed under section 301.559 may keep open, operate, or assist in keeping open or operating any established place of business for the purpose of buying, selling, bartering or exchanging, or offering for sale, barter or exchange, any motor vehicle, whether new or used, on Sunday.  However, this section does not apply to the sale of manufactured housing; the sale of recreational motor vehicles; the sale of motorcycles as that term is defined in section 301.010; the sale of motortricycles, motorized bicycles, electric bicycles as defined in section 300.010, all-terrain vehicles, recreational off-highway vehicles, utility vehicles, personal watercraft, or other motorized vehicles customarily sold by powersports dealers licensed pursuant to sections 301.550 to 301.560; washing, towing, wrecking or repairing operations; the sale of petroleum products, tires, and repair parts and accessories; or new vehicle shows or displays participated in by five or more franchised dealers or in towns or cities with five or fewer dealers, a majority.

  2.  No association consisting of motor vehicle dealers, distributors or manufacturers licensed under section 301.559 shall be in violation of antitrust or restraint of trade statutes under chapter 416 or regulation promulgated thereunder solely because it encourages its members not to open or operate on Sunday a place of business for the purpose of buying, selling, bartering or exchanging any motor vehicle.

  3.  Any person who violates the provisions of this section shall be guilty of a class C misdemeanor.