If you have a concealed weapon's permit, you may put your gun anywhere in your vehicle, or in your person loaded or unloaded, unless you are in school property.
If you do not have a concealed weapon's permit, you may not have it on you, and you may not hide the gun anywhere in your car unless it is unloaded. You may, however, have the gun loaded in your car if it is in plain view. You also cannot have a gun present (loaded or unloaded) in school property.
Only if you have a legal license
No, California doesn't acknowledge out of state CCWs.
Yes
Yes
yes your car is an extension of your home
If you can legally own a gun, you can carry in Alaska. See related link for more information.
Yes, you can carry a gun in your car in Oklahoma. However, it can not be loaded, and it must be kept in a case with all or at least part of the case visible.
In PA you have to be 21 to conceal carry (or carry loaded in your car) a handgun.
If you carry a gun you can stop car jacking.
Yes
A person may carry a concealed, loaded handgun without a permit while in or heading directly to a car they own or control.
It depends on what you mean. If you have a permit to carry a gun, you can carry in Tennessee (TN recognizes permits from any state). If you are talking about transporting the gun, you can transport a gun basically anywhere in the U.S. without a permit as long as the gun is unloaded and not accessible.