On Thu, 5 Oct 2017 09:42:09 -0400, Keyser Soze wrote:

You can drive from state to
state with an unloaded firearm in a case or box and not available for
ready use.

That works until you get up north.
There is no way to have a legal handgun in New York without a permit
from New York and it sounds the same in Massachusetts and New Jersey.