am i correct to assume that:
18 U.S. Code § 31 (6)Motor vehicle.—
The term “motor vehicle” means every description of carriage or other contrivance propelled or drawn by mechanical power and used for commercial purposes on the highways in the transportation of passengers, passengers and property, or property or cargo. (https://www.law.cornell.edu/uscode/text/18/31)
18 U.S. Code § 2311 “Motor vehicle” includes an automobile, automobile truck, automobile wagon, motorcycle, or any other self-propelled vehicle designed for running on land but not on rails; (https://www.law.cornell.edu/uscode/text/18/2311)
offer two differing definitions of what a motor vehicle is? (when i say two differing definitions, i mean that for § 31 the statement "used for commercial purposes" appears, where in § 2311 there is no distinction.)
And if so, which one supersedes the other in traffic court?