I don't know any knowledgeable gun people around where i live to even ask this question and its been nibbling at my brain for a while now.
Anyway i have just built a brand new AR a few months ago showed it to my dad and he seems to like it. However he has an assault charge from a few years ago so it is illegal for him to possess a firearm. So i said he could come to the range with me watch me shoot the thing if he wanted and then he offered to give me a ride there and i said that might be a bad idea. Now I'm thinking that since he is prohibited from possessing a firearm is placing a firearm in his vehicle giving him illegal possession of a firearm if he is the driver? I would assume that the driver is responsible for all items in the vehicle but i don't know, I'm always paranoid about legal matters...