I am not a lawyer by any means but would have to say no for the juvenile to be in possession of the firearm while traveling alone in a vehicle by themselves. Even with written permission from parent or guardian on their person might be on the sketchy side. But the bottom line would be if there is any chance of this coming back on any legal person of 18yrs of age or greater is it worth the problems that could arise. Also the problems for the juvenile in present time frame as well as after they became of legal age that could arise later. Best bet would be to get a legal opinion from a experienced lawyer on these type of issues. Or maybe just wait till the person turns atleast 18yrs old. I understand you wish to help with the gifting of the weapon but is it worth the possible cocequencies. ......................... drill sgt.