Your car itself could be seen as a huge metal weapon. And speaking of dangerous weapons, minors can get in a boatload—er, uh, carload—of trouble for being found in possession of a firearm or live ammunition. 

Obviously, your license will be suspended or revoked, and harsher penalties can be doled out if you've hurt or threatened anyone. If you find yourself embroiled in a gang situation and are tempted to bring a gun along with you, just do what they did in West Side Story: sing, dance, and snap your fingers a lot. Works wonders.

In your car, gun control isn't about holding it with two hands.