Do NOT do this in NH in a vehicle. It's illegal w/o a permit. Check it out in the RSAs, available off the NH website. See appropriate thread in the NH Laws forum for info on getting a NH NR permit and what their laws are (only a few pages, unlike MA).
http://www.nh.gov/safety/divisions/nhsp/ssb/permitslicensing/faq.html#A2
NH.gov website said:I would like to bring my handgun into New Hampshire, yet I don’t have a license to carry concealed. How may I carry?
* You may carry unloaded in your vehicle. Be sure that the ammunition is separate from the gun.
* You may carry loaded on your person. The weapon needs to be fully exposed. For example, it may not be concealed by a shirt or a jacket, or located in a backpack.
* You may carry unloaded and concealed on your person, so long as you do not possess any ammunition on your person.
* Please refer to RSA 159 for additional information.
here's a link to RSA 159
http://www.gencourt.state.nh.us/rsa/html/NHTOC/NHTOC-XII-159.htm
the only exception to carrying without a license is carrying LOADED.
do i recommend it? no. but is it legal (at least according to what they publish for information)...yes.