What are the Legal thoughts on the use of the X-Ray Backscatter technology to drive down a street and scan every car that police pass for illegal items like bombs? Where will this go when they scan someone's car and perform a hands on search to seize the firearms within? How the heck does this work or pass muster given the opinion in Kyllo v US. Is that different because it's a home and not vehicles? I'm quite concerned about this given that I go to WWII events with a truck and will often be carrying firearms and other gear for the event. I'm curious if I can refuse a search at a roadside check. More so for driving around in a normal situation where I'm armed or have firearms in my car and my vehicle is scanned by police with van equipped as above.