Answer: He would be a threat because depending on when this question takes place he had the biggest army force in the world.
The headlights of the vehicle should be turned on because it is easier for other vehicles to notice you. In a way that it will avoid any accidents or complications that could lead when other vehicles fail to notice you because of having your headlight off or broke down. That is why having the headlights turned on at this hours is needed to prevent any harmful consequences.
Mexico claimed New mexico after 1821